What are the part no.# for the JE10.5:1 piston for the 400ex just making sure they sent me the right stuff the box says for xr400 just I know the motors are close to the same just making sure never hurts to double check by the way it the std. bore 85mm JE the part # they sent me is 132697 rings xc8500 and should I have gotten a new needle bearings for the wrist pin or do they have them in this motor thanks for any replys the help is appreciated.