What performance difference are ya lookin for? The clutch isnt the weak spot on these.. UNLESS you go jackin up the springs, then the sintered throw out will break, its been known to break on stock clutch pressures..
If you do anything to the clutch that would mean stronger clamping forces, Id recommend taking the throwout to a shop & have a steel, billet cut out. I shimmed my springs just a little & mine broke, BUsted the cam chain guide the tensioner mounts to,,No tellin how ugly that coulda been if it had been at higher speeds..

Or. You have the wrong oil