I am trying to adjust my roller rockers on my 500 and am doing it the only way I know how try to spin the push rod when tightening the rocker adjuster till it will not turn by finger( you can hardly get your fingeers on them to spin them ) then another 3/4 which is about .030 . Is there any better way to figure out 0 lash cause i think i am tightening them down too far. I can see some of the lifters when adjusting and it seems like they start to move well before i can even feel any resistance .