Hi everyone, after a pretty hard bash session, I noticed a strange noise coming from the rear end of my slash 4x4. I tore the rear end, and the entire slipper assembly apart and everything appeared ok. after putting it back together I am able to lightly touch the throttle and have the motor and spur gear spin, but none of the wheels move??? I even tightened the slipper all the way down to make sure it just wasn't too loose, and still the motor and spur spin. is the slipper assembly shot?? I did notice a bit of a wobble on the spur that I cant get rid of. might have bent it a bit too. what do you guys think???