Thanks, that's what I was thinking. The question is, are there supposed to be threaded inserts in the door?
Yes, I believe mine was built in Oct/Nov of 1969. In any case, the press-on hardware I bought are nearly flat but the studs aren't long enough for the HW to grab hold. If something that is nearly flat won't catch, I can't see that a nut would be any better. Possibly the new door panels are thicker than the originals.