diff --git a/pkNX.Structures.FlatBuffers/Arceus/Learnset8a.cs b/pkNX.Structures.FlatBuffers/Arceus/Learnset8a.cs
index edfa092a..02efac59 100644
--- a/pkNX.Structures.FlatBuffers/Arceus/Learnset8a.cs
+++ b/pkNX.Structures.FlatBuffers/Arceus/Learnset8a.cs
@@ -28,7 +28,7 @@ public class Learnset8aMeta
     [FlatBufferItem(2)] public Learnset8aEntry[] Mainline { get; set; } = Array.Empty<Learnset8aEntry>();
     [FlatBufferItem(3)] public Learnset8aEntry[] Arceus { get; set; } = Array.Empty<Learnset8aEntry>();
 
-    public byte[] WriteAsLearn6()
+    public byte[] WriteLearnsetAsLearn6()
     {
         using var ms = new MemoryStream();
         using var br = new BinaryWriter(ms);
@@ -40,6 +40,19 @@ public byte[] WriteAsLearn6()
         br.Write(-1);
         return ms.ToArray();
     }
+
+    public byte[] WriteMasteryAsLearn6()
+    {
+        using var ms = new MemoryStream();
+        using var br = new BinaryWriter(ms);
+        foreach (var entry in Arceus)
+        {
+            br.Write(entry.Move);
+            br.Write(entry.LevelMaster);
+        }
+        br.Write(-1);
+        return ms.ToArray();
+    }
 }
 
 [FlatBufferTable, TypeConverter(typeof(ExpandableObjectConverter))]
diff --git a/pkNX.WinForms/Dumping/GameDumperPLA.cs b/pkNX.WinForms/Dumping/GameDumperPLA.cs
index 0fa57bbb..dab641f6 100644
--- a/pkNX.WinForms/Dumping/GameDumperPLA.cs
+++ b/pkNX.WinForms/Dumping/GameDumperPLA.cs
@@ -271,9 +271,11 @@ public void DumpLearnsetBinary()
             var obj = FlatBufferConverter.DeserializeFrom<Learnset8a>(data);
             var pt = GetPersonal();
             var result = new byte[pt.TableLength][];
+            var mastery = new byte[pt.TableLength][];
             for (int i = 0; i < result.Length; i++)
-                result[i] = Array.Empty<byte>();
+                result[i] = mastery[i] = Array.Empty<byte>();
 
+            var Dupes = new List<(int Species, int Form)>();
             foreach (var e in obj.Table)
             {
                 if (e.Arceus.Length == 0)
@@ -282,12 +284,30 @@ public void DumpLearnsetBinary()
                 var entry = (PersonalInfoLA_Bin)pt[index];
                 if (!entry.IsPresentInGame)
                     continue;
-                result[index] = e.WriteAsLearn6();
+                result[index] = e.WriteLearnsetAsLearn6();
+                mastery[index] = e.WriteMasteryAsLearn6();
+
+                if (e.Arceus.Select(z => z.Level).Distinct().Count() != e.Arceus.Length)
+                    Dupes.Add(new(e.Species, e.Form));
             }
 
-            var mini = MiniUtil.PackMini(result, "la");
-            var bin = GetPath(Path.Combine("bin", "lvlmove_la.pkl"));
-            File.WriteAllBytes(bin, mini);
+            // Learnset
+            {
+                var mini = MiniUtil.PackMini(result, "la");
+                var bin = GetPath(Path.Combine("bin", "lvlmove_la.pkl"));
+                File.WriteAllBytes(bin, mini);
+            }
+            // Mastery
+            {
+                var mini = MiniUtil.PackMini(mastery, "la");
+                var bin = GetPath(Path.Combine("bin", "mastery_la.pkl"));
+                File.WriteAllBytes(bin, mini);
+            }
+            // Dupes
+            {
+                var txt = GetPath(Path.Combine("bin", "lvlmove_dupes.txt"));
+                File.WriteAllLines(txt, Dupes.Select(z => $"{(Species)z.Species}{(z.Form == 0 ? "" : $"{z.Form}")}"));
+            }
         }
 
         private PersonalTable GetPersonal()