Has PT tried using any of these for your shoulder?
{low level laser, ultrasound or electric stim - IF type stim- not TENS}

And on the EFT site I'm sure there is a listing to find a practitioner in your area , maybe you could wrangle a free tx from them??
Doesn't hurt to ask about it.

There is the free download that you or a friend, can do it yourself.
Basically a pattern of tapping on face and upper body and focusing on some phrases while you do it.