tpiini Was your bellhousing centered on your motor? If not you will wearout your pilot bearing or bushing and have a shifting problem. Is the clutch releasing? measure the airgap between the pressure plate and the disc or flywheel. The disc may be worn out. I had a centerforce clutch with this problem at high rpm shifting, removed the wieghts on the pressure plate and have had no problem since that. Was the fluid burnt in the trans? Any metal shavings or chips on the bottom of the case? Dex III is good for normal driving but when worked hard it breaks down. Clean out fluid good and put a systhetic fluid in there, like Royal purple or
Amsoil. Where does your clutch pedal release at? Top or bottom? You may has just worn out the clutch. If you have complete clutch travel at the fork the clutch is shot. If a hydro throwout bearing may sure there is no air in the bearing, bleed the system. Same thing check the air gap when the pedal is pressed in. Let us know what you find. Good Luck
Rick Lake