dude go on aim, you know you could always ask me, and now you never do...anyway, open up the rear diff bro, and see wahts up. maybe a rock jammin the gear or something. check the diffs..check the motor, check the clutchbell...check the spur gear...missing teeth..etc. GO ON AIM! describe it to me in a little more detail and tell me what happened and i can most likely tell you whats up....you should know my sn! go on!