Did any of the PT, or DCs address the top rib by mobilizing it?
It may be raised and stuck, causing a more pronounced pinching effect.

Esp if you tend to be hyper-mobile, it can fluctuate quite a bit.

When mine was stuck /raised up, I felt like I was almost being partially choked or like a tight turtle neck sweater was on all the time. My symptoms were magnified and had much more use limitations.
Advanced PT dropped mine down and it was such an amazing change for the good. My DC and another PT did follow ups as needed a sit tended to pop up a few times later depending on uses.
But now it stays where it is supposed to be and i can feel if things start to move out of place.