Have an RC10gt.. Everytime I'm in loose dirt and there is wheel spin (hard acceleration) the car pulls to the left. I've rebuilt the Ball Diff, triple checked the settings and have the same results. It's almost like one wheel spins faster than the other and it goes left. When I'm in the grass it's fine. Anyone else have this problem or have any suggestions to fix?

I had this with a e-buggy. I ajusted the camber and caster on the rear untill it was oke

cool, will give it a try

could also be your diff that happened with my rc10gt the rear right tire was spinning was faster than the left which caused my car to pull.

is there any possibility that the steering trim is off??

nope that one is centered perfectly.

is it centered on the radio? it doesnt have to be centered there, actually most cars require it to be far from centered on the radio. if this is the prob then drive in a straight line and steer with the trim until it goes straight.