The clutch disc is in the right way (marked flywheel side), and centered. I wonder if the fork is right. Mine is the 14066235, but somebody mentioned the 3892632 is the one I need. Who knows??
Can you see the marking/sticker through the pressure plate fingers while it is bolted together? You mentioned the "flywheel side" markings so that makes me ask. Sorry if that seems to be a strange question but I want to help rule out the possibilities. It may have been marked wrong? The symptoms are pointing right at the disk or the pressure plate. The other possibilties include some lost motion in the linkage.
I once had to remove and replace the tranny and clutch 3 times in one day. The parts looked fine on the bench but the clutch would not release when installed. The final diagnosis was discovered when the counterman and myself assembled the flywheel to the clutch assy on the bench. The pressure plate fingers were warped but this was not visualy obvious when you looked at the parts just sitting there loose. We could see the warped fingers problem when we assembled them together but when apart the PP fingers looked perfectly straight. A replacement clutch was the solution.