Thanks Jon, Bartamos and Tom for the nice information and links. Since I don’t have a dial caliper or a screw thread gauge the best thing for me to do is to take my Fillister head screws to a local fastener company and ask them to measure them and match them up with new ones. I would never have guessed Rochester would have used different size screws!
And thanks Lindsey for reminding me to check for warpage.
