Long story, but an engine guy suggested I try running roller rockers in my 401 w/o machining the pedestals down by compensating with longer pushrods. I have been running this motor for several years w/o much trouble. I have it apart for some other maintenance and am again looking at my rocker arm geometry with this set up. Technically the roller tip should be centered on the valve stem. By eyeball it looks pretty good, however when I ink up the valve stem and check contact area I am slightly off-set towards the intake. Maybe 10-15%. Should I have any big concerns, or keep on keeping on?