I've had 3 rotator cuff surgeries.I'm just now getting back to shooting after my January 22 slice and dice. I had a complete separation of the lower bicep tendon and a near complete separation of the ligaments that connect the deltoid to the shoulder. At PT they told me they had an electrician that has had both shoulders done TWICE. That from doing a lot of overhead work. IMHO some of us are just built just a little different, and have bone spurs that rub on tendons and ligaments. I've heated with wood for 30 years, cut it down, cut it up, haul, split, stack, haul then dump the ashes. Lots of wear and tear. Many times I wasn't "set" for the weight of wet oak, thinking it was something lighter, and tore things up a little bit. That X 100 and I needed surgery. If shoulder pain lingers, see a professional ortho. NO amount of chiropractor can heal torn ligaments and tendons. Feel free to PM.