My shoulder has been getting a stabbing pain that is getting worse over the last few months. Physical terapist says its tendonitis of the long bicep head from long term bad posture. I read something last year about bar placement on squats leading to tendonitis but can't find anything specific. I like to squat high bar but its just to painful so I've gone to low bar for now. PT has me stretching, trying to stregnthen rhomboids ( with bands) and icing 3X daily. Anyone have any information, suggestions or experience with this?

I can bench upto 75% as long as I grip medium and really tuck my elbows. Overhead is out of the question.