A little more progress this week. Made a small tray to hold the power switch and a recharging jack. Started weathering but haven't broke out the air brush yet.
I've been thinking about how to reproduce the later style wheels. Here's the pic that StrretSquid originally posted. Look at the ribs on the stock early style wheel, they are about the right height. I cut a paper template that fit's in there pretty well. I might try it with thin styrene. Not sure how to add the bolts and I dont want to cut out 80 of them.