A fella on the Yahoo forum claims it is best to buy another whole clutch assembly and drop it in, than to buy the discs and such to rebuild yours. They also have thicker discs now an improvement, but old housings need to be modified to use those then. Seems the throw-out bearing in those wears into the case, causing it not to push enough to release the clutch. Very hard to get those apart, requires good press and care. Talk to Adam at the place, he is the PK Guru of them. Might still want to check trans shaft. sometimes the bearing goes bad and seal that allows oil into the clutch and messes up discs. Can you wiggle the input shaft alot?
not knowing spec's for pads, as their bout .063 thick now, I was thinking bout changing them while I had it apart.
also I didn't have any slipage problems before, so I may not change them. Throw-out bearing, may be bad, don't know till I get book, doesn't look to be in one pc, but not worn into the housing tho, but I'm concerned bout the copper pc the trans shaft goes into,,, trans shaft tho feels good, no slop sideways or endwise! and no oil in clutch housing either!