As I understand it, he also talked about the way the non-roller stock adjustable arms "walk" across the valve as designed, with some slip at the ends of the walk, and since I am putting a bunch more lift to them there will be a bit more at both ends of the travel. But basically they are doing what they were designed to do. with the curve of the pad, they kinda roll across the surface. It's nothing like what happens with a roller.
