1980 Panther 440 Clutch

I've got this clutch semi-apart, but really need to take it down to just bits and pieces so I can clean them all up. The ramps and rollers seem to be in good shape except for a bit of rust and dust build up. It sprang apart right after this picture was taken. There are 3 small bolts/set screws, I've backed out all the way, but still can't get the center piece off.

There is a bunch of rust, so WD-40 has been used a lot. Yes, I know, dry all the pieces off when assembling, but I needed...

1980 Panther 440 Clutch