Thanks.
Back to my gluing table!
Trouble is those brass inserts come out. I guess gluing them back in will do--although my first try is not a success.
BTW, do you know, are the threads different from most mounting screws?
I'm having more difficulty than I'd expected.
Just got up and running now by using NOS screws that came from AR, in 1964.
But I have only a couple of those.