comp lifter failure

Perf, why would you need adjustable rockers if the pushrods provide the correct preload? I never heard of this. Also what is the difference from a regular lifter and the anti pump up? I am not trying to be difficult I would just like to know so I don't make the same mistake.

COMP CAMS and it's other products seem to be suffering from greed. If they would have stuck to what they know and focus on cams only maybe they wouldn't have to worry about shitty lifters. But you do have to grow and make the investors happy