rotator exercises with light bands, high reps, make it burn and burn more. Isolate the area. Using dumbells or weighted cables or heavier bands - take away from isolating the area cause the form is comprimised. Its all about short range of motion, isolation and the burn. Changing angles of band, experimenting with different exercises. Work the area from all angles and separate (un-glue) the area from everything around it. I recommend doing this every second day forever. Three times a week for a while, do light (15-20 rep) dumbell presses where you go deep - so as to open up the front of the chest and set the shoulder. Grip the hell out of the dumbells always. After a few weeks, start to raise the weight for one of those workouts until you have one max day a week (3-4 reps plus 3-4 assisted reps) again....pressing deep. On press days - do 4 sets (one warm up). On max days, do 4 sets...with only 2 max effort sets. No other presses. Cut out all flys and lateral raises. Don't ever bomb the area with more assisted sets or lower weight high rep sets. Then start to introduce other presses - floor press, incline wide grip. Don't bomb the back or rear delts. Id back exercises that may be contributing to the problem (ie. reverse grip bent rows wrecked the area for me and killed the bicep tendon). This is what has worked for me - I am 50 years old and my shoulders are doing very well considering 30 plus years of power lifting.