Hey everyone, long time reader, first time poster.
I was hoping someone can help out with a persistent pain I have in my upper right arm.
Started out a while ago with overhead press movement, anytime I lowered bar from an OH press movement and my elbow bent past 90 degrees I would get a popping feeling in my elbow and shoulder. I rested and did some rehab work through a physio and it seemed to give some relief.

Fast forward a few months and I am now getting pain in my delts and tricept when i raise my arm above shoulder height.

If my arm is extended and raise it straight up to my side I get pain in my delt area, mostly towards the posterior that seems to extend into my tricep. However if I perform the same action with my forearm bent 90 degrees forward (think drinking from a cup) I tend not to get the pain.

Overhead press in front is painful however I can do mobility work with a PVC pipe (unweighted) behind my head in a pressing movement and my shoulder complex feels tight but not painful.

Unfortunately when I’ve tried looking in the “Pain” section, there is nothing for the bicep/tricep area so have been working on a bunch of the exercises from the “Rear Shoulder” section. When doing this like the Rotator smash and floss I have found a lot of pain spots especially between the scapular and spine that have increased mobility when I have tested before and after. The problem is I generally wake up the next day with even more pain in my delt/tricep.

Just wanted to check if I am doing anything wrong or get any suggestions as to a possible cause or area t concentrate on.

I will try to get a video to post to explain a bit better.