diff --git a/Recyclable.Collections/RecyclableLongList.Enumerator.cs b/Recyclable.Collections/RecyclableLongList.Enumerator.cs
index 693b1b6..3a5177a 100644
--- a/Recyclable.Collections/RecyclableLongList.Enumerator.cs
+++ b/Recyclable.Collections/RecyclableLongList.Enumerator.cs
@@ -4,42 +4,22 @@ namespace Recyclable.Collections
 {
 	public partial class RecyclableLongList<T>
 	{
-		// & WAS SLOWER
-		// [StructLayout(LayoutKind.Sequential, Pack = 1)]
-		// [StructLayout(LayoutKind.Sequential)]
 		public struct Enumerator : IEnumerator<T>
 		{
-			// & WAS SLOWER WITHOUT
-			#nullable disable
-						private static readonly T _default = default;
-			#nullable restore
+#nullable disable
+			private static readonly T _default = default;
+#nullable restore
 
 			private static readonly bool _isReferenceType = !typeof(T).IsValueType;
 
 			private int _currentBlockIndex;
 			private int _currentItemIndex;
 			private readonly RecyclableLongList<T> _list;
-			// & WAS SLOWER WITHOUT
-			#nullable disable
-						private T _current;
-			#nullable restore
-			// & WAS SLOWER
-			// private readonly ulong _enumeratorVersion;
-			// public T Current => _enumeratorVersion != _list._version ? throw new InvalidOperationException() : _current;
 
+#nullable disable
+			private T _current;
+#nullable restore
 			public readonly T Current => _current;
-				// & WAS SLOWER
-				// get => _currentItemIndex > 0
-				// 		? _list._memoryBlocks[_currentBlockIndex][_currentItemIndex - 1]
-				// 		: _list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1];
-				// & WAS SLOWER
-				// get => _currentItemIndex != RecyclableDefaults.BlockIndexLimit
-				// 		? _currentItemIndex > 0
-				// 		? _list._memoryBlocks[_currentBlockIndex][_currentItemIndex - 1]
-				// & WAS SLOWER
-				// 		: _list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1]
-				// 		? _current
-				// 		: throw new IndexOutOfRangeException();
 			// & WAS SLOWER
 			// {
 			// get
@@ -61,12 +41,6 @@ namespace Recyclable.Collections
 			// 	: _list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1];
 			// }
 			// }
-
-			// & WAS SLOWER
-			// [MethodImpl(MethodImplOptions.AggressiveInlining)]
-			// [MethodImpl(MethodImplOptions.NoInlining)]
-			// [MethodImpl(MethodImplOptions.AggressiveOptimization)]
-			// [MethodImpl(MethodImplOptions.NoInlining | MethodImplOptions.AggressiveOptimization)]
 			public bool MoveNext()
 			{
 				// & WAS SLOWER
@@ -76,17 +50,10 @@ namespace Recyclable.Collections
 				// }
 				//
 				// Contract.EndContractBlock();
-
-				// & WAS SLOWER WITHOUT
 				var list = _list;
-				// & WAS SLOWER
-				// ref var currentBlockIndex = ref _currentBlockIndex;
-				// & WAS SLOWER
-				// ref var currentItemIndex = ref _currentItemIndex;
 
 				if (_currentBlockIndex < list._lastBlockWithData)
 				{
-					// & WAS SLOWER WITHOUT
 					_current = list._memoryBlocks[_currentBlockIndex][_currentItemIndex];
 					if (_currentItemIndex + 1 < list._blockSize)
 					{
@@ -100,44 +67,19 @@ namespace Recyclable.Collections
 
 					return true;
 				}
-				// & WAS SLOWER
-				// else if (list._longCount == 0)
-				// {
-				// 	return false;
-				// }
 				// Move to the next item if we're within block boundaries, otherwise report end of collection.
 				else if (list._longCount > 0 && _currentItemIndex < (list._nextItemIndex > 0 ? list._nextItemIndex : list._blockSize))
 				{
-					// & WAS SLOWER WITHOUT
 					_current = list._memoryBlocks[_currentBlockIndex][_currentItemIndex];
-					// & WAS SLOWER WITHOUT
 					_currentItemIndex++;
 					return true;
 				}
-				// & WAS SLOWER
-				// else if (_currentItemIndex != RecyclableDefaults.BlockIndexLimit)
-				// {
-				// 	_currentItemIndex = RecyclableDefaults.BlockIndexLimit;
-				// _current = _default;
-				// }
 
 				return false;
 			}
 
 #nullable disable
 			readonly object IEnumerator.Current => _current;
-				// & WAS SLOWER
-				// get => _currentItemIndex > 0
-				// 		? _list._memoryBlocks[_currentBlockIndex][_currentItemIndex - 1]
-				// 		: (object)_list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1];
-				// & WAS SLOWER
-				// get => _currentItemIndex != RecyclableDefaults.BlockIndexLimit
-				// 		// ? _currentItemIndex > 0
-				// 		// ? _list._memoryBlocks[_currentBlockIndex][_currentItemIndex - 1]
-				// 		// : _list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1]
-				// 		// & WAS SLOWER
-				// 		? _current
-				// 		: throw new IndexOutOfRangeException();
 #nullable restore
 			// & WAS SLOWER
 			// readonly object? IEnumerator.Current => _enumeratorVersion != _list._version ? throw new InvalidOperationException() : _current;
@@ -149,11 +91,6 @@ namespace Recyclable.Collections
 			// 		// 	throw new InvalidOperationException();
 			// 		// }
 
-			// 		// if (_list._longCount == 0 || _currentItemIndex == RecyclableDefaults.BlockIndexLimit)
-			// 		// {
-			// 		// 	throw new IndexOutOfRangeException();
-			// 		// }
-
 			// 		// Contract.EndContractBlock();
 
 			// 		return _currentItemIndex > 0
@@ -161,27 +98,23 @@ namespace Recyclable.Collections
 			// 			: _list._memoryBlocks[_currentBlockIndex - 1][_list._blockSize - 1];
 			// 	}
 			// }
-
 			public Enumerator(RecyclableLongList<T> list)
 			{
-				// & WAS SLOWER WITHOUT
 				_current = _default;
 				_currentBlockIndex = 0;
-				// & WAS SLOWER
-				//_currentBlockIndex = -1;
 				_currentItemIndex = 0;
 				_list = list;
-				// & WAS SLOWER
-				// _enumeratorVersion = list._version;
 			}
 
 			public void Reset()
 			{
-				// & WAS SLOWER WITHOUT
+				// if (_enumeratorVersion != _list._version)
+			 	// {
+			 	// 	throw new InvalidOperationException();
+			 	// }
+				
 				_current = _default;
 				_currentBlockIndex = 0;
-				// & WAS SLOWER
-				//_currentBlockIndex = -1;
 				_currentItemIndex = 0;
 			}