In another thread, I asked about a nylon set screw on my Excelsior saw. There were a few comments but no real answers. I emailed King, the manufacturer on Jan 4th. I asked them "What does the nylon set screw do? Sent a picture of the clamps with the set screw circled. I received a response today! "i asked my techs here and they dont know either. we dont get many scroll saws for repair" There are a couple of things in this response that bother me. First; the length of time to respond. Maybe I am unrealistic, but I would have expected a response, automated or not, within 1-2 business days. Second; lack of capitals, punctuation and signature. I replied back to them saying that it was an unfulfilling response and as the developer & manufacturer there should be someone who should know what that part is for. I guess we will see what their response is. Just in case anyone didn't see the original, here is a picture of the part I am trying to get information about.