Yeah its not just the disk, My buddy with his evo picked up a stage 3 XTD kit and it wouldnt hold the moment after breakin, felt worse than the stock pp, disk didnt last 10k miles before it would not grip at all any longer. POS clutch, buddies F1 racing blew springs out less than 1k miles, Its not an install error. There is no tolerances that are checked in their products, so some of you might get a stronger pp than others while some get weak ones. Same goes with the disks. Yeah the only thing thats held up is the flywheel. But its hard to mess that up. But JGY pulled that one off. lol.