Off with the primary drive and clutch, remove the primary case, off with rotor, remove stator if it's still there and re-assess the picture.
Could be only the primary/clutch is contaminated, you'll find out when you get everything off what else has been modified.
Good luck.
sounds like the rotor magnets have come apart & made a mess, you will have to strip & clean every thing new rotor & stator & reg as well , strip clutch & clean also
There is an aftermarket replacement that magnets not glued much stronger. seen them for EVO. & was told they have them for tc.
suggest that you might also have a look at comments by Hilly on the thread called Primary Bearing Failure - he mentioned a few things that might help
best of luck with the repair