2nd, 3rd & 4th, give it full throttle, hits 7k and the clutch slips like fek

new springs & plates methinks, or possibly get away with just friction plates.
same went on me 750, must be sumat to do with my riding style... hardly use the clutch tbh and last few rides i noticed the bite point has moved considerably - just touching the lever sets it spinning.
so i was wondering, has anyone used ebc or barnet with good results?
if i'm spending dosh i'd rather uprate it so i'd prefer the barnet... or a proper slipper?
only one i know of was made by TT (?) but it's discontinued for the storm, last time i looked

ideas on a postcard please...