diff --git a/Core/Services/ProfileFixerService.cs b/Core/Services/ProfileFixerService.cs
index 917890a7..f2a5b59d 100644
--- a/Core/Services/ProfileFixerService.cs
+++ b/Core/Services/ProfileFixerService.cs
@@ -1,22 +1,60 @@
-using Core.Annotations;
+using Core.Annotations;
+using Core.Helpers;
 using Core.Models.Eft.Common;
 using Core.Models.Eft.Common.Tables;
 using Core.Models.Eft.Hideout;
 using Core.Models.Eft.Profile;
 using Core.Models.Enums;
+using Core.Utils;
+using System.Text.RegularExpressions;
+using ILogger = Core.Models.Utils.ILogger;
 
 namespace Core.Services;
 
 [Injectable(InjectionType.Singleton)]
 public class ProfileFixerService
 {
+    private readonly ILogger _logger;
+    private readonly HashUtil _hashUtil;
+    private readonly JsonUtil _jsonUtil;
+    private readonly ItemHelper _itemHelper;
+    private readonly DatabaseService _databaseService;
+
+    public ProfileFixerService(
+        ILogger logger,
+        HashUtil hashUtil,
+        JsonUtil jsonUtil,
+        ItemHelper itemHelper,
+        DatabaseService databaseService)
+    {
+        _logger = logger;
+        _hashUtil = hashUtil;
+        _jsonUtil = jsonUtil;
+        _itemHelper = itemHelper;
+        _databaseService = databaseService;
+    }
+
     /// <summary>
     /// Find issues in the pmc profile data that may cause issues and fix them
     /// </summary>
     /// <param name="pmcProfile">profile to check and fix</param>
     public void CheckForAndFixPmcProfileIssues(PmcData pmcProfile)
     {
-        throw new NotImplementedException();
+        RemoveDanglingConditionCounters(pmcProfile);
+        RemoveDanglingTaskConditionCounters(pmcProfile);
+        RemoveOrphanedQuests(pmcProfile);
+        VerifyQuestProductionUnlocks(pmcProfile);
+        FixFavorites(pmcProfile);
+
+        if (pmcProfile.Hideout is not null)
+        {
+            AddHideoutEliteSlots(pmcProfile);
+        }
+
+        if (pmcProfile.Skills is not null)
+        {
+            CheckForSkillsOverMaxLevel(pmcProfile);
+        }
     }
 
     /// <summary>
@@ -26,7 +64,38 @@ public class ProfileFixerService
     /// <param name="fullProfile"></param>
     public void CheckForAndFixDialogueAttachments(SptProfile fullProfile)
     {
-        throw new NotImplementedException();
+        foreach (var traderDialoguesKvP in fullProfile.DialogueRecords)
+        {
+            if (traderDialoguesKvP.Value.Messages is null)
+            {
+                continue;
+            }
+
+            var traderDialogues = traderDialoguesKvP.Value;
+            foreach (var message in traderDialogues.Messages) {
+                // Skip any messages without attached items
+                if (message.Items?.Data is null || message.Items?.Stash is null)
+                {
+                    continue;
+                }
+
+                // Skip any messages that don't have a stashId collision with the player's equipment ID
+                if (message.Items?.Stash != fullProfile.CharacterData?.PmcData?.Inventory?.Equipment)
+                {
+                    continue;
+                }
+
+                // Otherwise we need to generate a new unique stash ID for this message's attachments
+                message.Items.Stash = _hashUtil.Generate();
+                message.Items.Data = _itemHelper.AdoptOrphanedItems(message.Items.Stash, message.Items.Data);
+
+                // Because `adoptOrphanedItems` sets the slotId to `hideout`, we need to re-set it to `main` to work with mail
+                foreach (var item in message.Items.Data.Where(item => item.SlotId == "hideout"))
+                {
+                    item.SlotId = "main";
+                }
+            }
+        }
     }
 
     /// <summary>
@@ -35,7 +104,7 @@ public class ProfileFixerService
     /// <param name="scavProfile">profile to check and fix</param>
     public void CheckForAndFixScavProfileIssues(PmcData scavProfile)
     {
-        throw new NotImplementedException();
+        return;
     }
 
     /// <summary>
@@ -44,7 +113,106 @@ public class ProfileFixerService
     /// <param name="pmcProfile">Profile to check items of</param>
     public void FixProfileBreakingInventoryItemIssues(PmcData pmcProfile)
     {
-        throw new NotImplementedException();
+        // Create a mapping of all inventory items, keyed by _id value
+        var itemMapping = pmcProfile.Inventory.Items
+            .GroupBy(item => item.Id)
+            .ToDictionary(x => x.Key, x => x.ToList());
+
+        foreach (var mappingKvP in itemMapping) {
+            // Only one item for this id, not a dupe
+            if (mappingKvP.Value.Count == 1)
+            {
+                continue;
+            }
+
+            _logger.Warning($"{ mappingKvP.Value.Count - 1} duplicate(s) found for item: {mappingKvP.Key}");
+            var itemAJson = _jsonUtil.Serialize(mappingKvP.Value[0]);
+            var itemBJson = _jsonUtil.Serialize(mappingKvP.Value[1]);
+            if (itemAJson == itemBJson)
+            {
+                // Both items match, we can safely delete one (A)
+                var indexOfItemToRemove = pmcProfile.Inventory.Items.IndexOf(mappingKvP.Value[0]);
+                pmcProfile.Inventory.Items.RemoveAt(indexOfItemToRemove);
+                _logger.Warning($"Deleted duplicate item: {mappingKvP.Key}");
+            }
+            else
+            {
+                // Items are different, replace ID with unique value
+                // Only replace ID if items have no children, we dont want orphaned children
+                var itemsHaveChildren = pmcProfile.Inventory.Items.Any((x) => x.ParentId == mappingKvP.Key);
+                if (!itemsHaveChildren)
+                {
+                    var itemToAdjust = pmcProfile.Inventory.Items.FirstOrDefault((x) => x.Id == mappingKvP.Key);
+                    itemToAdjust.Id = _hashUtil.Generate();
+                    _logger.Warning($"Replace duplicate item Id: {mappingKvP.Key} with {itemToAdjust.Id}");
+                }
+            }
+        }
+
+        // Iterate over all inventory items
+        foreach (var item in pmcProfile.Inventory.Items.Where((x) => x.SlotId is not null)) {
+            if (item.Upd is null)
+            {
+                // Ignore items without a upd object
+                continue;
+            }
+
+            // Check items with a tags for non-alphanumeric characters and remove
+            Regex regxp = new Regex("[^a-zA-Z0-9 -]");
+            if (item.Upd.Tag?.Name is not null && !regxp.IsMatch(item.Upd.Tag.Name))
+            {
+                _logger.Warning($"Fixed item: { item.Id}s Tag value, removed invalid characters");
+                item.Upd.Tag.Name = regxp.Replace(item.Upd.Tag.Name, "");
+            }
+
+            // Check items with StackObjectsCount (undefined)
+            if (item.Upd.StackObjectsCount is null)
+            {
+                _logger.Warning($"Fixed item: {item.Id}s undefined StackObjectsCount value, now set to 1");
+                item.Upd.StackObjectsCount = 1;
+            }
+        }
+
+        // Iterate over clothing
+        var customizationDb = _databaseService.GetTemplates().Customization;
+        var customizationDbArray = customizationDb.Values;
+        var playerIsUsec = pmcProfile.Info.Side.ToLower() == "usec";
+
+        // Check Head
+        if (customizationDb[pmcProfile.Customization.Head] is null)
+        {
+            var defaultHead = playerIsUsec
+                ? customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultUsecHead")
+                : customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultBearHead");
+            pmcProfile.Customization.Head = defaultHead.Id;
+        }
+
+        // check Body
+        if (customizationDb[pmcProfile.Customization.Body] is null)
+        {
+            var defaultBody = playerIsUsec
+                    ? customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultUsecBody")
+                    : customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultBearBody");
+            pmcProfile.Customization.Body = defaultBody.Id;
+        }
+
+        // check Hands
+        if (customizationDb[pmcProfile.Customization.Hands] is null)
+        {
+            var defaultHands = playerIsUsec
+                    ? customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultUsecHands")
+                    : customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultBearHands");
+            pmcProfile.Customization.Hands = defaultHands.Id;
+        }
+
+        // check Hands
+        if (customizationDb[pmcProfile.Customization.Feet] is null)
+        {
+            var defaultFeet = playerIsUsec
+                    ? customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultUsecFeet")
+                    : customizationDbArray.FirstOrDefault((x) => x.Name == "DefaultBearFeet");
+            pmcProfile.Customization.Feet = defaultFeet.Id;
+        }
     }
 
     /// <summary>
@@ -54,7 +222,16 @@ public class ProfileFixerService
     /// <param name="pmcProfile">profile to remove old counters from</param>
     public void RemoveDanglingConditionCounters(PmcData pmcProfile)
     {
-        throw new NotImplementedException();
+        if (pmcProfile.TaskConditionCounters is null)
+        {
+            return;
+        }
+
+        foreach (var counterKvP in pmcProfile.TaskConditionCounters
+                     .Where(counterKvP => counterKvP.Value.SourceId is null))
+        {
+            pmcProfile.TaskConditionCounters.Remove(counterKvP.Key);
+        }
     }
 
     /// <summary>
@@ -63,12 +240,50 @@ public class ProfileFixerService
     /// <param name="pmcProfile">Player profile to check</param>
     protected void RemoveDanglingTaskConditionCounters(PmcData pmcProfile)
     {
-        throw new NotImplementedException();
+        if (pmcProfile.TaskConditionCounters is null)
+        {
+            return;
+        }
+
+        var taskConditionKeysToRemove = new List<string>();
+        var activeRepeatableQuests = GetActiveRepeatableQuests(pmcProfile.RepeatableQuests);
+        var achievements = _databaseService.GetAchievements();
+
+        // Loop over TaskConditionCounters objects and add once we want to remove to counterKeysToRemove
+        foreach (var TaskConditionCounterKvP in pmcProfile.TaskConditionCounters) {
+            // Only check if profile has repeatable quests
+            if (pmcProfile.RepeatableQuests is not null && activeRepeatableQuests.Count > 0)
+            {
+                var existsInActiveRepeatableQuests = activeRepeatableQuests.Any(
+                    (quest) => quest.Id == TaskConditionCounterKvP.Value.SourceId);
+                var existsInQuests = pmcProfile.Quests.Any(
+                    (quest) => quest.QId == TaskConditionCounterKvP.Value.SourceId);
+                var isAchievementTracker = achievements.Any(
+                    (quest) => quest.Id == TaskConditionCounterKvP.Value.SourceId);
+
+                // If task conditions id is neither in activeQuests, quests or achievements - it's stale and should be cleaned up
+                if (!(existsInActiveRepeatableQuests || existsInQuests || isAchievementTracker))
+                {
+                    taskConditionKeysToRemove.Add(TaskConditionCounterKvP.Key);
+                }
+            }
+        }
+
+        foreach (var counterKeyToRemove in taskConditionKeysToRemove) {
+            _logger.Debug($"Removed: {counterKeyToRemove} TaskConditionCounter object");
+            pmcProfile.TaskConditionCounters.Remove(counterKeyToRemove);
+        }
     }
 
     protected List<RepeatableQuest> GetActiveRepeatableQuests(List<PmcDataRepeatableQuest> repeatableQuests)
     {
-        throw new NotImplementedException();
+        var activeQuests = new List<RepeatableQuest>();
+        foreach (var repeatableQuest in repeatableQuests.Where(questType => questType.ActiveQuests?.Count > 0)) {
+                // daily/weekly collection has active quests in them, add to array and return
+                activeQuests.AddRange(repeatableQuest.ActiveQuests);
+        }
+
+        return activeQuests;
     }
 
     /// <summary>
@@ -77,7 +292,20 @@ public class ProfileFixerService
     /// <param name="pmcProfile">Profile to remove dead quests from</param>
     protected void RemoveOrphanedQuests(PmcData pmcProfile)
     {
-        throw new NotImplementedException();
+        var quests = _databaseService.GetQuests();
+        var profileQuests = pmcProfile.Quests;
+
+        var activeRepeatableQuests = GetActiveRepeatableQuests(pmcProfile.RepeatableQuests);
+
+        for (var i = profileQuests.Count - 1; i >= 0; i--)
+        {
+            
+            if (!quests.ContainsKey(profileQuests[i].QId) || activeRepeatableQuests.Any((x) => x.Id == profileQuests[i].QId))
+            {
+                profileQuests.RemoveAt(i);
+                _logger.Success("Successfully removed orphaned quest that doesn't exist in quest data");
+            }
+        }
     }
 
     /// <summary>