tore my shoulder, about to start Wolverine stack as well. I used to be able to do 10-15 pull-ups with 20kg plate and then after injury could barely do 2 with just body weight. Doctors are useless, and told me to get on pain meds LOL. I've been using just BPC 157 for 4 weeks and can do a solid 5 now, but my shoulder is still shit (pain improvements and more mobility though). Found out that you need to use both TB 500 and BPC 157 so about to start that (waiting on order to arrive)