Linkpimp, the Ammo was 5mm shaft too but a little dremmel time has it at a real nice 3.2mm now, so other than a tossed warranty I don't mind changing the shaft size...
Looks like I'll be looking into the mega and velineon motors. They are better than the feigao's?
If I could only draw what I see in my head, then afford to build it, and finaly get to play with it...