RE: A question for the PRO'S
your motor mounts might not be lined up good with your gears.... might be to snug or loose.... i havent had ne problems and i've ran mine VERY hard..... i noticed after i tore my motor down that when i put it back on that i had the gears meshed to close together .... it was pretty obvious... so i'd say first check that make shure you have proper spacing between your differential gears and the gears off your motor.