His springs are the same ones I run in my bike, barnetts Jeff sells. I can't figure it out. Its like the pressure plate goes in too far, and when you put the springs in, they aren't long enough to keep the bolts from bottoming out. Normally when you put springs in, you have to compress the spring slightly in order for the bolt to thread in. Not his, you put the spring in, and the screw immediatly threads in without compressing the spring, and then bottoms out before the spring can compress like they normally would. We measured the thickness of his clutch plates, and they are within spec. The inner and outer hub has been replaced with factory Yamaha parts.
I have worked on alot of clutches, but don't have a clue what is wrong with his, any help would be greatly appreciated.