So I've been having pain in my rear delt during any kind of chest press exercise, the pai itself isn't terrible but it's persistent and I've hade it for months now and it's seems to be far worse after heavy bench. I have never made a habit of doing rear delt strengthening ever a I noticed this morning that when I did low weight high rep rear delt flys my shoulders felt great after. My question is could two decades of rear delt neglect be the cause of my pain ? Answers and opinions appreciated.