Super stock LT 80, clutch mods, always seems quick and dependable. Last race, held rear brake, revved engine high, release brake and nail it harder, slips, lets off the throttle, nails again, takes off. Service clutch, rear drum has been hot, (blue streaks), install new pressure plates, new outer spring washer on rear, (running 2 now), scuffed surfaces and sprayed with break cleaner. Same setup, hold break, high rev, slipped again. If you don't hold brake and rev, will take off fine from dead stop. Once it got warm and was ridden a few minutes, held brake, revved, and it took off hard. Any ideas? Drum surface slick or dirty? Advice? ....and hey again Jack!

Thanks

 

What does the front rollers look like?

 

New.