Last months a had a pain in my, let's say, "string shoulder". I was afraid I was on my way to a tendinitus. Since a few weeks I am shooting by a coach now, who saw I was anchoring almost with just two fingers, the last (lowest)one barely on the string. We worked on this and now I am anchoring correct again, with all three fingers on the string.
Since I do this, the pain is going away and my shoulder feels so much better! The coach mentioned that anchoring with two fingers might just have been the cause for my sore shoulder.
Just wanted to share this with you guys, especially when you are suffering from a sore shoulder too!