take the plates out and post some pic's esp of the steels lying flat so we can see if they are warped
It'll cost you nothing to take them out, as the O-ring that seals the clutch cover centre is re-usable.
As far as UK prices for the clutch, for Genuine yamaha parts
3 off 4X7163250000 steel plates £8.95 ea
4 off 1TA163250000 steel plates £ 8.02 ea
8 off 5TA163210000 Friction plates £12.00 ea
As Krannie says, I doubt your clutch is worn out
At the very least, soak the friction plates in oil for 24Hrs and try it again
Edited by GuyGraham, September 24, 2013 - 09:35 AM.