I would believe most are skeptical with heavy spring load applications but not with street applications. We should use Ed Pink's guarantee policy once it starts you own it. There are no guarantees with any performance parts no matter who the manufacturer is.
MLR426
The issue with the alum. body offshore rockers was the spindle the roller tips turns on is brittle and is breaking. Once broken the rocker body design can/will push on the retainer and pop the valve locks off the valve, the valve drops into the cylinder and one can guess the rest.
Rockers are one place you shouldn't really skimp as even these type rockers have broken with light hyd. flat tappet spring pressures.
