My clutch started slipping alright. Thought it needs adjustment. Took the cover off and realized there still was some [little] slack. In an attempt to better it I removed the infamous sprig plate and replaced it with a friction plate (+ two steel plates of course). The friction plate came from a friend who got it from J&P Cycles.
Now, every time I'm a little more aggressive taking off I hear grinding sound, first time I thought I spun the rear tire. But it appears to come from engine.
Has anybody had similar experience with cheap aftermarket friction plates?

 

Cheap aftermarket parts don't go In My Roadster,,,ever.

Sounds like you got the know how so just relace the whole clutch pac.