I bought a set cause I couldn't resist the price! You get what you pay for.
The adjusters on mine were so loose they would not stay adjusted even through breakin. Rather than take them out I staked the threads on the adjustment with a long sharp punch to roughen up the threads so they would stay. About 500 miles now and I have lifter noise and after checking the lift with a dial indicator on the lifter (not exact I know but close enough) to see I have lost varing amounts of lift on different lobes.
I had my cam ground by Pete1 on here and on the ham and it was beautiful. Potvin Eliminator specs. It sounded and ran great at first.
I will be really disappointed if the cam has been ruined and not work in another engine.
Today I ordered a new cam and lifters from Schneider Cams and will put them in soon.
You get what you pay for.