25 years worth of insight, that's useful right there.. Thank you for sharing.

Having said that I will say. I have had both roller fulcrum Harland Sharps, Crane and now Hughes. I believe the roller fulcrum uses more oil which takes more from the bottom end. This is only my opinion no proof. Any quality one will certainly perform better than stock. I have swapped from stock rockers to Crane rollers on a engine with a small cam and good springs, the results were surprising 500 plus useable RPM. It idled better and pulled harder on our up hill grade in top gear. Considering how bad stock stamped rocker ratios are or can be. I am certain the resulting improvements were a result of that and correct lifter preload.