Reply to "Door/window felt and cat wiskers"

Metal self-tapping screws have been known to back out a tiny bit but enough to touch the glass and produce a series of scratches  when the window is parked in one position. The door skins are quite thin so you only get about 1.0 threads. That and road vibrations seem to easily loosen them. Never tried brass screws or Lock-tite but I suspect brass is still harder than glass. Keep an eye on them- after a few years, my car had a series of dots engraved all the way up the driver's side glass.