Hello Ralph:
It's a good solid build. I love Shermans! Thnx for sharing. May I offer a few observations?
1) the stowage of the track links and dufflebags on the engine deck look strange. Why? Imagine the tank going at 25 mph or up and down ditches. Anything not strapped down would just fly off.
You need to secure the duffles. Get rid of the spare track blocks too (they are missing the rods as they were designed to sit in the track holders of the Tamiya M4A3 kit). I've never seen four spare road wheels on anything besides a recovery vehicle (and they only had two).
2) the rear lights: the bottom one should be black
3) maybe change the silver shovel. Too revealing -- maybe black or olive drab.
4) your handles on the drivers' hatches seem a bit too wide, as well.
If you really want to go nuts on your next Sherman project, have a look here:
http://www.usarmymodels.com/ARTICLES/articles.html Thanks again for sharing. Best regards, RC