Steve and Brian, thanks for the help.
Steve, will check this out.
Brian, I had thought about the .7 in a .75 hole trick, but had not done the math, so was initially worried about damage issues. Will probably just run them in and see how it goes. Fortunately, I have several plates.
Since I'm probably not going to find original-like screws, I'll look for 4x.7 socket heads.
Thanks again.
If anyone has NOS or clean originals, I would be interested.
...bert