my sport is slipping BAD it wont even take off i tightened the slipper clutch all the way down and it still wont go. would the slipper clutch be worn out or would it be the clucth bell i dont know i need help this is my first nitro rc ive ever owned

you eather blew out the diffrential or the idler gear in the transmission

sounds like a differential problem. no big.jk