i know,too many projects,but you see, i got started on this late in life.okay, here goes,comp. cams roller rockers onfactory 7/16 studs.ordered for this application.bottom of polylocks appear to be mushrooming out,studs appear to be getting worn by the rocker.rocker feels like there is noticeable movement from side to side on the stud!are there stud girdles available for these heads?how much higher is valve train if so?[ihave tall covers].thanks,jimm