I just tore my motor back down to put a 4 mill crank in it cause i blow the rod out of the old crank. My old setup with .80 wiseco piston, v-force reeds, ported cylinder, milled head, wicked out of frame drag pipe, 35mm mikuni carb converted over to alky and nitro and stock crank wirth a hot rod. Now am dropping in the 4mm, 38mm keihin flatslide with powerjet and ftz out of frame drag pipe and i was told my port timing would be off what do i have to do to correct this how much do the transfer ports need to be raised and lowered. i have another cylinder and am thinking bout just sending it to wicked so they can port it for me.