About 12 months ago a mates stage 2 comp cam broke into 3 pieces as well as destroying a handful of valves, we put it down to bad luck . A month ago I had a comp cam stage 4 break into 3 pieces destroying 6 valves. Now this is not bad luck. I emailed Comp Cams and there reply was basically bad luck, they only offer a 12 month warranty and no warranty for racing. Goes to show what faith they have in there products. I spoke to my engine builder and he wont touch them, apparently they have stop using in house and local suppliers and are now outsourcing over seas so the quality is crap. By the way OBX offers a lifetime warranty. Who will you use in the future??