The cam might actually be collapsing as well. We had a Trykon XL that had your exact problem. Hoyt told us that they made.......ahhhhh, I can't remember how many, but it wasn't too many, that the cam wasn't strong enough in longer DL's, like 31 and 32 inches. That was this one's problem, the cam was collapsing and the string would jump off about every 2 or 3 shots.