I have Aluminum Roller Tip Rocker Arms from 440 Source. Many of you guys have Harland Sharp, Crane, Comp, Hughes and the like. I have been told by various techs that the side clearance (set by adjusting shims) should be anywhere between .015" and .030"....so should they be set at .015 OR .030 ? Or just anywhere between these two. Let me know where you guys set yours. Thanks.