Sorry for the long time to get this up, but S&W only just got it back to me. No joy on them fixing the yoke screw. It looks they had removed it to take a look, but all I got back was the gun, packing material, and a punch sheet signed that just said "obsolete gun, no parts available".
I cleaned up the yoke screw hole better and carefully reassembled with blue locktite this time. The red didn't harden properly from the look. I never degreased it before assembly with red locktite before taking it to the range and then shipping it to S&W. I am also going to order a 5-44 helicoil/thread repair insert kit. No plans to do that anytime soon if the locktite holds it. It will tighten to at least a couple inch pounds before it seems like it starts yielding further. So totally degreased screw and hole and blue locktite might just be all it needs. Just needs to keep the crane and cylinder from falling off and I have no plans to be going around flicking the cylinder open or closed.
Her finish is ugly, but I joke she is a 4 in the streets and a 9 in the sheets. She shoots so nicely, balances incredibly well for such a long barrel, and that trigger is just mmmmmm.