I'm back (sort of). Anybody that called or emailed me, you might want to do it again, I am plowed under by the volume. i'll try to get to everyone but it may take a bit.
Wendell, all you have to do is glass the underside with 2 oz glass and paint it. Monokote won't work very well here. But, if you're good, it may look fine.
yes I back the gear pants up with 1/8" ac ply and drill the axle hole, mount the gear pant and wheel, then line up the pant and drill and tap a 4-40 screw about 3/8" above the axle. This locks the pant in place.
As for the dragon, that's sort of my trademark

Cool though huh?
-Mike