Model M more drilling
It's a routine now. I drill ten or so holes through the steel backplate into the black plastic. I can't drill from the black plastic side because I can't see where to drill. So I drill a 1/16 hole, then I can see where it goes. Then I use a 1/8 handheld drill to widen the hole slightly, so I can insert the bolt and add the nut.
For a few of them, I have to grind some plastic out of the way, or the bolt won't go in straight.
Out of the original 87, I have 21 left to do.