Does anyone have Bob Hannon's book handy, to look up what the typical resistance is for one of these motors?
Also @Soo Line you mentioned "new brushes." There are some motor brushes being sold as replacement parts which have a very high resistance. They are NOT a proper substitute for postwar brushes and will cause excess heat and other issues if used. If I had caught that the first time I read this thread I would have suggested that you clean the old brushes and put them back.
A new armature isn't expensive, but in my experience a shorted coil is pretty rare. Keep trying, don't give up!
