I have used socket cap screws, and also set screws with the knurled ends. Sometimes there is not enough room for the socket cap head screws. Have most people found using the socket screws (the end is not knurled) to hold better than set screws, or the other way? Second question, is there already a thread or video, about a consistant way to secure a flipper where it needs to be while tightening the shaft screws? I usually prop up the playfield with a stick so the playfield is up about ten inches so I can work both sides. Sometimes when tightening the set screws it will move the shaft. I am sure just about everyone has seen this. Sometimes I tape the flipper in position with blue masking tape. Is this one of those jobs described as just do whatever works?