I know this is kinda vague but I am hoping someone else has had this problem. My quad runs great for about 2 hours straight, then starts to act as if it has sucked in water. It starts to gradually spit and sputter, and then gets worse. It only sputters until it hits the power band at which time it straightens up. If I park the quad, for about 15 mins or so, and get on it, it runs great again for about 30 mins or so, and starts over again. Anyone had this problem? Just looking for ideas, since i wont have time to take a look at it for a couple days. Thanks for any ideas.