Welp. A screw-in stud seems a PIA to me, lacking as I do a lathe or any taps or dies of the proper threads and gauge. But it does look like the way forward.
What a weird-ass glitch!
I'll see about getting the time-cert and the proper--what is it? 37/64th drill bit. Etc.
You don't have to hand make everything, Ed. You've done lots already. Google screw in stud suppliers. They're out there and may have some in a box ready to ship to you right now.