Well my group finally arrived, and it looks beautiful (maybe I can post pictures after my next few posts). I did a few test fittings and found two things interesting -

1) the rear derailleur does not swing freely. It is just barely binding mid arch right at the bottom of where the adjustable stopper screw is located. I suspect the frame has a slight dent in that part of the dropout that is just enough to mess up the clearance. I am going to file the frame slightly (it shouldn't need much at all to move freely).

2) Where the brakes screw into the frame - every other frame I have had had a larger hole to allow the Allen nut to countersink. This frame seems to just be a small hole. Maybe I just need to use a standard locknut back there? I suspect this is pretty common for older frames. Maybe this is a 70s frame?

Thanks.