This started happening to me after about 14 months of shooting my new bow. After each shot, I'd have to give the peep a twist so that when I drew, it would line up correctly. After doing this for several shots, my string started to "corkscrew" inside the serving. I immediately put the bow in the case. When I checked it the next morning, the string had broke. Be careful! The string won't last forever, especially if you shoot a lot.