quick fix for tmaxx one way
if your one way starter bearing is slipping try this
dissassemble the starter drill one small hole 1/8 dia in the back of the plastic cover then drill one in the bottom. now when you get it together the next time it slips just take some carb cleaner and spray it in the hole in the back of the starter case and let it drain out of the hole in the bottom. the reason this happens is running rich the oil seeps out of the brass bushing the shaft comes thru
and soaks the one way bearing. it works every time for me.