take the STOCK crank gear/oil pump gear off and turn it around. there is a chamfer (angle) on the rear side where it mates up with the crank. you need to mirror that same angle onto the JP crank gear.
DO NOT forget to put both pieces of the JP double on. i forgot the oil pump gear when i put mine back together the first time and i spun a bearing because of no oil. the stock is a single piece, as is the rollmaster. the JP is a TWO PIECE system.
i have not done any of this, but i milled my oil pump cover and i havent had any problems yet. i havent opened it up to look, but i figure if it breaks then i get to make it even faster than it is now.
