Rhoads Lifters On Solid Lifter Cam - Setting Valve Lash

Well, he is bottoming out the piston in the lifter, making it a very deep 'solid' lifter. I dont know how the pushrods are going to like it but its viable although the solid 'lash ramp' is going to play havoc on his timing as its going to lift the valve early as the lifter is going to become solid again once the oil enters. Not what I would expect to hear from a lifter manufacturer....?

They adjust totally opposite of how you think. The MORE feeler gauge you use, the LESS bleed down you get. In other words, say you have a BIG hydraulic cam. All you want to adjust is like .015" feeler gauge. That gives the most in reduced duration. By contrast, you can adjust up to .035 and get basically no bleed down. It's all on their web site in the instructions page.