I have a tc3 car that I race at my local track. I have been experiencing difficultly with the differentials. They either loosen up on me. On the Screw breaks inside the diff. I really would appreciate any advice you can give me.

Thanks Rick

If the screw breaks, you are, more then likely, tightening it down too much. If they loosen on you, try replacing the lock-nut in the diff.

ok I replaced the nut and it seems to be working excellent thanks