I, too, have been having issues with my left shoulder. Feels more like an impingement, but it might be a tear, as I recall when I first hurt it, it "burned" (I was sledding down a mountain and was getting out of control. I "stopped" myself with my elbow and that seemed to "pull" too hard on the shoulder.)
It "clicks" when I move it across my chest and I think it's starting to bother my elbow. Not sure what's really going on, but I'm hoping maybe a chiropractor can align it. Also, feels like a balls of nerves right near my shoulder blade and when I bench, it feels like my arm's twisting. When I do dumbbell curls, I can't seem to get a good pump in the biceps and it feels like more of the outer triceps that gets the workout. And, then there's the ulnar nerve. Feels like it wants to pop out or some such.