So i have 1.6 ratio, Comp cam roller tip rockers sitting on top of recently installed 3/8" screw in studs. I'm using Comp cam poly-lock nuts (the kind that has the allen-headed middle screw that you tighten down). My question is this: there is a black spacer that went between the nut and the rocker arm pivot ball. The spacer no longer fits, as I've upgraded my stud size to 3/8". Do I need this spacer? I kind of feel like it's necessary if you're doing self-locking nuts, but I've tossed those in lieu of the poly locks. Any info is appreciated! Mat (I've included a nifty picture of the spacer in question.)
A phone call is the best. A guy i new didnt install those rockers correctly and had to buy a new valve train set up, being there was shavings all in the heads!