I've also added the tools to the back of the tank, adding a little more detail to the kit parts. Dragon's tool layout doesn't look like most of the pictures I've seen of M4A1's, but it appear to be correct for Derby. You can just make out the sledge hammer in the picture in the Concord books, so I went with Dragon's layout. It's probably a case of Dragon getting it accidentally right, because there are so many other details they got wrong on Derby.
That's it for now, I've got a club meeting tomorrow and should probably have something to bring.