Boy this does sound very familiar! I wonder if you'd have any results with an MUA at this point?
From what I have learned, the more arthroscopic exploration, the increased risk for more scar tissue...

I was fortunate the MUA was under the "warranty" period! I didn't have to pay for it! But I did have to pay for that extended length of time of needless physical therapy sessions of pain where I was not improving (due to the scar tissue), and the trip back, travel expenses, hotel... that added up. Set me back to starting all over again towards daily PT... atlas, finally seeing progress.