Been back training since the Summer, started off slowly with a full body workout 3 times a week, light weights, 10-12 reps. Slowly built the weight up and started to notice some pain from the top of the right shoulder. Very specific point on the AC Joint when doing pushing movements. So Bench press, gets worse on the decline and dips are out of the question - anything that really compresses the ACJ. Interestingly over head pressing is fine.
There was an in surgery decision made by the consultant to clean up the right ACJ, although it was causing no problems and hadn't even registered on the MRI.