I found M1.6 screws on ebay from a R/C hobby store. Pretty sure they're (standard).35 pitch rather than the .4 listed in the Motorola parts list, and they seem to fit just fine. Drilling these out is really not as simple as it sounds; you'd get the assembly apart, yes, but then you'd have to use a tap or something to get the remaining screw out of the thread on the faceplate side... The superglue trick takes a long time, but it's much faster in the long run! If you're stripping out a tiny Phillips head, stop what you're doing and try something else. A different screwdriver, superglue, heat the screw with a soldering iron... just don't strip it.