i'm not a comp cams lover but i really have to wonder how much of the failure rate is due to folks wanting more aggressive profiles. at what point is enough enough? why don't some of these grinders just say no to this? people want a flat tappet hydraulic to perform like a solid, wanting solids to perform like rollers and unreliable roller profiles with crazy spring pressures. i doubt a true 25% failure rate but i don't use them because of reliability issues i've had. i'm satisfied with the slower more reliable lobes and if someone's car is quicker than mine then so be it. at least i'm working on my junk. wiping some lobes is like crapping the bed; helluva mess to clean up.