Ok my granite voltage pretty much stopped running, if I pick it up the wheels begin to turn. I have taken it apart and all the gears and differential are still good. There seems to be a rattling noise when I try to run it and noticed the ESC seems to be vibrating. I am relatively new to the RC world so I'm just completely lost. I did notice one of the out drives are stripped, not sure if that would cause the issue, but can't seem to get any replacements until mid August...