Another clutch not completely disengaging thread

last couple, i think its safe to say that the centre of the TO bearing was hitting the clutch disc shaft, but why? One thing i did notice was when the pressure plate was bolted to the flywheel, the fingers were pretty much straight (not angled out towards gearbox).
No part number on the pressure plate apart from what looks to be the number 501. I do recall the guy over the counter telling me its a Chevy one, clutch is 10.5" unit.
If anyone can give me any pointers, id love to read them!
Thanks again to everyone.

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