I have a feeling I might have this condition. Whatever it is bothering my shoulders has definitely hindered my pressing movements.
Where exactly does the pain occur with this? I typically get it in the area the clavicle meets the delt and it gets worse the heavier I go on the pressing movements. Flat bench is definitely the worst exercise in terms of aggravating it, but incline and sometimes military does it too. I can usually get away with strict flys and hammer strength presses without any pain, but pretty much any bb press is gonna make it worse. Also, the symptoms kinda come and go, sometimes it'll bother me for months on end then go away for several months. It always flairs up towards the end of a cycle, due to the heavier poundages I'm hitting.