wijim: have you consulted with a physical therapist? I have a friend in the South Bend area that is a traditional bowhunter and a physical therapist, and I know he has offered help for my shoulder that worked. If you ask at a local hospital, they should be able to put you in touch with one. It might surprise you the rather unorthodox exercises they can come up with, but they can zero in on a spot such as your elbow.
Best of luck, Arch--another one fast qualifying for the 'ol' geezer' category!!