Thought I'd post this just so you know I'm still commited to this challenge. Real life intruded at a frantic pace in the first week of Oct, but now things have settled down to a dull roar. Here's one of the driver wheels. The center drivers have a larger counter-weight than the outside drivers, so I modeled my wheel without. This will allow me to duplicate the wheel and add the appropriate size of counter-weight later. I'm not happy with the color yet as the prototype seems to be more of an olive green, but the pin-striping went well. I will post more soon.