diff --git a/mROA.Cbor/CborSerializationToolkit.cs b/mROA.Cbor/CborSerializationToolkit.cs
index 608abdc..bd9d63f 100644
--- a/mROA.Cbor/CborSerializationToolkit.cs
+++ b/mROA.Cbor/CborSerializationToolkit.cs
@@ -14,10 +14,43 @@ namespace mROA.Cbor
 {
     public class CborSerializationToolkit : IContextualSerializationToolKit
     {
-        private Dictionary<Type, IOrdinaryStructureParser> _parsers = new(){{typeof(NetworkMessageHeader), new NetworkMessageHeaderParser()}, {typeof(DefaultCallRequest), new DefaultCallRequestParser()}, {typeof(FinalCommandExecution<object>), new FinalCommandExecutionParser()}, {typeof(FinalCommandExecution), new FinalCommandExecutionResultlessParser()}}; //
+        private readonly IOrdinaryStructureParser[] _parsers = {
+            new NetworkMessageHeaderParser(), new DefaultCallRequestParser(), new FinalCommandExecutionParser(),
+            new FinalCommandExecutionResultlessParser()
+        };
+        // private Dictionary<Type, IOrdinaryStructureParser> _parsers = new(){{typeof(NetworkMessageHeader), new NetworkMessageHeaderParser()}, {typeof(DefaultCallRequest), new DefaultCallRequestParser()}, {typeof(FinalCommandExecution<object>), new FinalCommandExecutionParser()}, {typeof(FinalCommandExecution), new FinalCommandExecutionResultlessParser()}}; //
         private Dictionary<Type, List<PropertyInfo>> _propertiesCache = new();
         public static TimeSpan SerializationTime = TimeSpan.Zero;
-        private HashSet<int> a;
+
+        private bool FindParser(Type t, out IOrdinaryStructureParser parser)
+        {
+            if (t == typeof(NetworkMessageHeader))
+            {
+                parser = _parsers[0];
+                return true;
+            }
+
+            if (t == typeof(DefaultCallRequest))
+            {
+                parser = _parsers[1];
+                return true;
+            }
+
+            if (t == typeof(FinalCommandExecution<object>))
+            {
+                parser = _parsers[2];
+                return true;
+            }
+
+            if (t == typeof(FinalCommandExecution))
+            {
+                parser = _parsers[3];
+                return true;
+            }
+
+            parser = null;
+            return false;
+        }
         public byte[] Serialize(object objectToSerialize, IEndPointContext context)
         {
             var sw = Stopwatch.StartNew();
@@ -128,7 +161,7 @@ namespace mROA.Cbor
 
         public void WriteData(object? obj, CborWriter writer, IEndPointContext? context)
         {
-            if (obj is not null && _parsers.TryGetValue(obj.GetType(), out var parser))
+            if (obj is not null && FindParser(obj.GetType(), out var parser))
             {
                 parser.Write(writer, obj, context, this);
                 return;
@@ -251,7 +284,7 @@ namespace mROA.Cbor
 
         public object? ReadData(CborReader reader, Type? type, IEndPointContext? context)
         {
-            if (type is not null && _parsers.TryGetValue(type, out var parser))
+            if (type is not null && FindParser(type, out var parser))
             {
                 return parser.Read(reader, context, this);
             }
diff --git a/mROA.Cbor/IOrdinaryStructureParser.cs b/mROA.Cbor/IOrdinaryStructureParser.cs
index 6ea1545..8ceb61e 100644
--- a/mROA.Cbor/IOrdinaryStructureParser.cs
+++ b/mROA.Cbor/IOrdinaryStructureParser.cs
@@ -17,7 +17,7 @@ namespace mROA.Cbor
     {
         public void Write(CborWriter writer, object value, IEndPointContext context, CborSerializationToolkit serialization)
         {
-            var v = value as NetworkMessageHeader;
+            var v = (NetworkMessageHeader)value;
             writer.WriteStartArray(3);
             writer.WriteByteString(v.Id.ToByteArray());
             writer.WriteInt32((int)v.MessageType);
@@ -91,10 +91,10 @@ namespace mROA.Cbor
     {
         public void Write(CborWriter writer, object value, IEndPointContext context, CborSerializationToolkit serialization)
         {
-            var v = value as FinalCommandExecution<object>;
+            var v = (FinalCommandExecution<object>)value;
             writer.WriteStartArray(2);
-            serialization.WriteData(v.Result, writer, context);
             writer.WriteByteString(v.Id.ToByteArray());
+            serialization.WriteData(v.Result, writer, context);
             writer.WriteEndArray();
         }
 
@@ -103,8 +103,8 @@ namespace mROA.Cbor
             reader.ReadStartArray();
             var result = new FinalCommandExecution<object>
             {
+                Id = new Guid(reader.ReadByteString()),
                 Result = serialization.ReadData(reader, typeof(object), context),
-                Id = new Guid(reader.ReadByteString())
             };
              reader.ReadEndArray();
              return result;
@@ -115,7 +115,7 @@ namespace mROA.Cbor
     {
         public void Write(CborWriter writer, object value, IEndPointContext context, CborSerializationToolkit serialization)
         {
-            var v = value as FinalCommandExecution;
+            var v = (FinalCommandExecution)value;
             writer.WriteStartArray(1);
             writer.WriteByteString(v.Id.ToByteArray());
             writer.WriteEndArray();
diff --git a/mROA/Implementation/CancellationRepository.cs b/mROA/Implementation/CancellationRepository.cs
index 3bc93c2..3fae6fc 100644
--- a/mROA/Implementation/CancellationRepository.cs
+++ b/mROA/Implementation/CancellationRepository.cs
@@ -8,7 +8,7 @@ namespace mROA.Implementation
 {
     public class CancellationRepository : ICancellationRepository
     {
-        private ConcurrentDictionary<Guid, CancellationTokenSource> _cancellations = new();
+        private readonly ConcurrentDictionary<Guid, CancellationTokenSource> _cancellations = new();
 
         public void RegisterCancellation(Guid id, CancellationTokenSource cts)
         {
diff --git a/mROA/Implementation/ChannelInteractionModule.cs b/mROA/Implementation/ChannelInteractionModule.cs
index 5d71447..4c9858f 100644
--- a/mROA/Implementation/ChannelInteractionModule.cs
+++ b/mROA/Implementation/ChannelInteractionModule.cs
@@ -127,7 +127,7 @@ namespace mROA.Implementation
             }
             else
             {
-                await _trustedWriter.WriteAsync(new NetworkMessageHeader());
+                await _trustedWriter.WriteAsync(new NetworkMessageHeader(){Data = Array.Empty<byte>()});
             }
 
             PassReconnection();
diff --git a/mROA/Implementation/CommandExecution/FinalCommandExecution.cs b/mROA/Implementation/CommandExecution/FinalCommandExecution.cs
index c94a4d1..f22723f 100644
--- a/mROA/Implementation/CommandExecution/FinalCommandExecution.cs
+++ b/mROA/Implementation/CommandExecution/FinalCommandExecution.cs
@@ -5,14 +5,16 @@ using mROA.Abstract;
 
 namespace mROA.Implementation.CommandExecution
 {
-    public class FinalCommandExecution : ICommandExecution
+    public struct FinalCommandExecution : ICommandExecution
     {
         public Guid Id { get; set; }
         public EMessageType MessageType => EMessageType.FinishedCommandExecution;
     }
 
-    public class FinalCommandExecution<T> : FinalCommandExecution
+    public struct FinalCommandExecution<T> : ICommandExecution
     {
+        public Guid Id { get; set; }
+        public EMessageType MessageType => EMessageType.FinishedCommandExecution;
         public T? Result { get; set; }
     }
 }
\ No newline at end of file
diff --git a/mROA/Implementation/NetworkMessageHeader.cs b/mROA/Implementation/NetworkMessageHeader.cs
index 93894a7..1729499 100644
--- a/mROA/Implementation/NetworkMessageHeader.cs
+++ b/mROA/Implementation/NetworkMessageHeader.cs
@@ -5,7 +5,7 @@ using mROA.Abstract;
 
 namespace mROA.Implementation
 {
-    public class NetworkMessageHeader
+    public struct NetworkMessageHeader
     {
         private bool Equals(NetworkMessageHeader other)
         {
@@ -21,12 +21,10 @@ namespace mROA.Implementation
         }
 
         public static readonly NetworkMessageHeader Null = new();
-        public NetworkMessageHeader()
-        {
-            Id = Guid.NewGuid();
-            MessageType = EMessageType.Unknown;
-            Data = Array.Empty<byte>();
-        }
+        // public NetworkMessageHeader()
+        // {
+        //     Data = Array.Empty<byte>();
+        // }
         public NetworkMessageHeader(IContextualSerializationToolKit serializationToolkit,
             INetworkMessage networkMessage, IEndPointContext? context)
         {
diff --git a/mROA/Implementation/RepresentationModule.cs b/mROA/Implementation/RepresentationModule.cs
index 4bc64ba..1afb9cb 100644
--- a/mROA/Implementation/RepresentationModule.cs
+++ b/mROA/Implementation/RepresentationModule.cs
@@ -71,9 +71,17 @@ namespace mROA.Implementation
                     continue;
                 }
 
-                var type = converter.Select(i => i(message)).First(i => i != null)!;
-                var deserialized = _serialization.Deserialize(message.Data, type, context);
-                yield return (deserialized, message.MessageType)!;
+                
+                for (int i = 0; i < converter.Length; i++)
+                {
+                    var func = converter[i];
+                    if (func(message) is {} t)
+                    {
+                        var deserialized = _serialization.Deserialize(message.Data, t, context);
+                        yield return (deserialized, message.MessageType)!;
+                        break;
+                    }
+                }
             }
         }