They have the same issue on the new Yeti. Right frt wheel picks up under hard acceleration. It comes from the truck squatting slightly and the frame twisting. The low KV 1/8th motors put out some monster torque. If you're going to mainly do speed runs, it's normal to lash the suspension. Then to bash with, just cut them loose and let it have full suspension.

I just picked up a fairly pristine factory Castle 3908 E-Maxx tonight off Ebay, got a killer deal, and will be setting it up like I always do.