Are all Ford door sill plates made of cheapo metal? Put "new" ones on my '67 a few months back and almost all the screws have already pulled through the sill plates. I paid $100 for a "new" set for our '58 Thunderbird last year, and the screws pulled thru them as I was installing. Not to mention none of the holes line up on either of them. Is the only real option to find a decent set of original plates and clean them up?