First, a question, how new is your string? Until I had about 150 arrows through my new string, Gander Mtn. wouldn't even set my peep because of it stretching and twisting while being broken in. Even then they had to take the string off and twist it a little because it would come back and twist the moment the cam kicked in. Honestly though, I have heard nothing but bad things about the peep sights with tubing. I have a RAD Super Deuce peep sight and have not had a single problem with it.