Installing stock clutch setup in a 63 w/6 cyl. and the issue is how much clearance (if any) between the throwout bearing and the arms of the fork. Choices seem to be 'interference fit', snug but free(loose), or needing a rubber mallet to get the thing to go into the fork where it is supposed to be, which is the only viable choice at the moment. Perhaps a simple case of wrong fork to begin with? Thanx.