I purchased a GN with a blown head gasket that was using GN1 heads, Comp HR cam and scorpion 1.65 rockers. Before the head gasket repair it had the normal roller rocker noise, but now I have a lot of noise. Engine was torn down and all the bearning checked out fine and everything cleaned. I expected a little noise because of the roller rockers, but it just does not sound like they are adjusted correctly. I have adjusted them like I would a small block Chevy, but they are still noise. Any one using these rockers that can help provide some light on the proper adjustment.