I'm having a problem with the tranny. from a dead stop if i get on it to much the car shakes violently like something is skipping gears. its the ax4n so I'm sure someone on here would know what could possibly be wrong with it. I've been looking at things about the diff pins but not sure what exactly they do and if that could be it. I've changed the axles on both sides and the front wheel bearings so its got to be somewhere in the tranny. when it gets going above about 10mph and i get on it it only does it every now and then. but not that often. so please help.