UNOBTANIUM,
Thank you for your generous offer to send me your slings. Based on a recommendation from the techie at Brownells, I ordered a Specter CST 3 point sling from Specter.
i hope this works-if not, I will take you up on your kind offer.
With regard to my shoulders, a number years ago a highly regarded surgeon at NY Presbyterian Hospital in NYC advised me that the that the only thing that could be done was to completely replace both my shoulders. In view of the fact that i had already had both hips replaced I didn't want to go through another major surgery. A lifetime of combat athletics has taken its toll.