hey my mates got an rc10gt2 an the diff on it just slips so when trying to drive the car it doesnt move we took the diff apart an all seems ok
an cause its got no gears inside the diff like on a jato i dont know wat the problem could be seen as theirs no aparent damage
all other gears in the transmission are perfectly fine and so are the teeth on the outside of the diff
any suggestions other then buyin a new diff ? cheers

inside one of your drive cups on the diff there is a screw that tightens the diff. tighten it all the way, then back it off 1/8th of a turn. check your slipper .lutch too.