diff --git a/EpinelPS/LobbyServer/Inventory/IncreaseEquipmentExp.cs b/EpinelPS/LobbyServer/Inventory/IncreaseEquipmentExp.cs
index d16c8ce..0591d1d 100644
--- a/EpinelPS/LobbyServer/Inventory/IncreaseEquipmentExp.cs
+++ b/EpinelPS/LobbyServer/Inventory/IncreaseEquipmentExp.cs
@@ -20,11 +20,13 @@ namespace EpinelPS.LobbyServer.Inventory
                 var item = user.Items.FirstOrDefault(x => x.Isn == srcItem.Isn);
                 item.Count -= srcItem.Count;
 
-                goldCost += AddExp(srcItem, destItem);
+                goldCost += AddExp(srcItem, destItem).exp;
+
+                // TODO: boost modules. for now, excess exp gets scrapped
 
                 response.Items.Add(NetUtils.ToNet(item));
             }
-            
+
             response.Currency = new NetUserCurrencyData
             {
                 Type = (int)CurrencyType.Gold,
@@ -33,13 +35,13 @@ namespace EpinelPS.LobbyServer.Inventory
 
             // we NEED to make sure the target item itself is in the delta list, or the UI won't update!
             response.Items.Add(NetUtils.ToNet(destItem));
-            
+
             JsonDb.Save();
 
             await WriteDataAsync(response);
         }
 
-        int AddExp(NetItemData srcItem, ItemData destItem)
+        (int exp, int modules) AddExp(NetItemData srcItem, ItemData destItem)
         {
             var srcEquipRecord = GameData.Instance.itemEquipTable.Values.FirstOrDefault(x => x.id == srcItem.Tid);
             var destEquipRecord = GameData.Instance.itemEquipTable.Values.FirstOrDefault(x => x.id == destItem.ItemType);
@@ -51,11 +53,12 @@ namespace EpinelPS.LobbyServer.Inventory
                 .OrderBy(x => x) // order from lowest to highest
                 .ToArray();
             int exp = levelRecord.exp * srcItem.Count;
+            int modules = 0;
 
             destItem.Exp += exp * srcItem.Count;
-            
+
             // TODO: double-check this. is this a thing?
-            // destItem.Exp += GetUser().Items.FirstOrDefault(x => x.Isn == srcItem.Isn).Exp;
+            // destItem.Exp += GetSourceExp(srcItem);
 
             while (destItem.Exp >= expNextTable[destItem.Level + 1] && destItem.Level < maxLevel[destEquipRecord.grade_core_id - 1])
             {
@@ -65,9 +68,30 @@ namespace EpinelPS.LobbyServer.Inventory
 
             if (destItem.Level >= maxLevel[destEquipRecord.grade_core_id - 1])
             {
+                modules = destItem.Exp; // is the ratio actually 1:1?
                 destItem.Exp = 0;
             }
 
+            return (exp, modules);
+        }
+
+        int GetSourceExp(NetItemData srcItem)
+        {
+            var item = GetUser().Items.FirstOrDefault(x => x.Isn == srcItem.Isn);
+            var equipRecord = GameData.Instance.itemEquipTable.Values.FirstOrDefault(x => x.id == item.ItemType);
+            var levelRecord = GameData.Instance.ItemEquipGradeExpTable.Values.FirstOrDefault(x => x.grade_core_id == equipRecord.grade_core_id);
+            int[] expNextTable = GameData.Instance.itemEquipExpTable.Values
+                .Where(x => x.item_rare == equipRecord.item_rare)
+                .Select(x => x.exp)
+                .ToArray();
+            int level = item.Level;
+            int exp = item.Exp;
+
+            while (level-- > 0)
+            {
+                exp += expNextTable[level];
+            }
+
             return exp;
         }
     }