Oh, I came across some pics of "stuff" that Mike at B3RE did w/ some Hughes rockers used on Trick Flow heads that included switching to cup-style adjusters (requires pushrod oiling). I can't say exactly what differences would result from such a mod, but it's pretty obvious the pushrod tip's relation to the rocker fulcrum would change big-time.
I'm curious where you found these pictures. These look like my heads and rockers. They came out great with Mike's kit and the change to cup adjusters. The sweep is small and centered and there is minimal lift loss. I am running dual taper 9/16" (.165 wall) oil thru pushrods from Trend and lose less than .008 lift on a .716 lift solid roller. With the change to the cup adjusters there is almost no change in pushrod angle from full closed to full open. Even though the pushrod side doesn't add too much in the way of harmonics issues, I can't help but think this minimal movement goes a long way to promoting valve train stability.
