When I hit the button the starter spins and does not turn over the engine, there is a small gear that drives the overrunning clutch that does not turn. It is a two piece gear, is it supposed to turn as one i.e. have an interference fit or something? There is a snapring to hold it together but no splines or key, it turns in itself but is stiff I don't understand this design. Help! The bike is an 05 450x.