Seb had a temp clutch in his car a couple weeks ago while we were waiting for his Carbon Carbon to be made....It was a JWT that I took out of a customers car and we used it so Seb could go to the track....It broke the springs in the Disc on his first burn out at the track....He limped it home ...the clutch material looked fine , but 2 of the springs poped out and were binding.....THIS HAPPENES TO ALL MAKE CLUTCH DISC's....not very offen , but it does happen.