I had a similar issue when I first got my fusions. I had only flown it a few times and I could here hissing. This came as a complete shock because flexi has such legendary quality gear (*thinking it was my bladder*). I found out that the noise was coming from one the clear tubes. This took less than 30 seconds to fix as flexi issues you about 10 of these things with tie wraps with every kite that I purchased. So I have about 40 of them ha-ha. I've only had to replace one of them ONCE and it was when I was cleaning my kites not while I was on the water. Ask anyone I slam my gear probably harder than most kiters at matanzas. This sounds like some "small potatoes" compared to some other kites I've been hearing about *COUGH* slingshot
