Originally Posted by big_swede
Try moving your grip in.
Thats what I would recommend as well.
I started doing Shoulder Dislocations with a Broom stick and DB Rotations 3-4 times a week and it help loosen up my shoulders. My shoulder issue came from squats, but if I bench with too wide of a grip too much. I get sore and develop tendonitis. Moving my grip in, just an inch helps.
If that PT is correct. You have created a muscle imbalance. Which will cause issues like you have.
Things to work on..
Stretches and Mobility of the Chest and Shoulders.
Strengthen the Rear Delts. I wouldn't even bother hitting the front delts with direct work for a while. Focus on Rears.
I recommend getting this book...