I have a 400 block. Galleys to supply heads have been drilled to lifter galleys for full time oil supply to rockers. #4 cam bushing has been rotated and drilled to no longer supply oil to top. My question is what size restrictors should I start with in the deck for Harland Sharp rockers? Ball & Cup, Trick flow heads. Thinking the world blocks ran .035 or .040 screw in restrictors at the deck but not positive.