ive been working all the kinks out of this car for a while now but this one eludes me. it drives smooth until i hit the brakes, the wheel turns itself about an eighth of a turn but the car doesnt veer left or right. occasionally there will be quite a bit of vibration from this as well. what puzzles me is i have had all for wheels off and checked over all four brake setups and everything is working fine so why would it turn. any possible leads on this are greatly appreciated