Hi! Out of curiosity, I took out my 3-year-old FLY and inspected the seams. I did the same with last year's Firefly after a full season of riding. In neither case is there even the slightest sign of thread damage. Some time ago, when I was selling another FLY after two seasons, I also examined it carefully to make sure I wasn't passing off a defective product to someone. The wing was in excellent condition. Many of my friends ride NP wings, and honestly, this is the first failure I've come across.