bought a 500 set up . bord case , put pistons and jugs on . and turned motor over and pistons are a quator inch from top ov jugs at highest point. i think i have a 4mm crank in this motor but not sure it has number 204 on crank web . and 1.21 on coneecting rod it says hot rod on conecting rods. is this a stock hot rod crank ? and will a 10mm crank bring pistons up abought a quator ov a inch ? or do i need longer conecting rods? or just a taller piston?? WOULD PITCHERS HELP WITH QUESTIONS ? LET ME NO THANKS.