The thing is, in all three cases... the screw is TIGHT in the plastic of the connector, to the point of being very hard to remove. Yet to work as a "stop", it would have to be loose... (which doesn't seem to make sense). When I tried to remove the screw, the screw tip became mangled, rather than budge. How could the screw work it's way "loose" so tightly. I can see no evidence of glue residue. Strangely, on some of my older 57s there is a threaded hole in the case... below an unthreaded hole above the above mentioned screw.
Behind the connector there is a ridge in the metal case which keeps the connector from being pushed back into the microphone. But, if the connector is pushed to this point, the screw is past the (unthreaded) hole.
I don't get it. Are these things held in by magic? The karma of the engineer?
Shure wants a flat $50 fee to fix a 57... which seems a bit much considering the mics work and appear undamaged... untill you unplug em.
If nobody minds, I'd like to keep this thread alive for a few more days just to be "shure" no one knows the answer to this problem.
Thanks everyone,
Chaz