Prior to my TPS experimentation, Sunday afternoon was out doing some moto, just as Im getting ready for some pics, my bike starts falling on its face, but only on places that are carrying g-loads, like jump faces, backsides, and only on the bottom end of the range. Up in higher RPM, seemed ok. So I ran around the course a couple of times on the rev limiter, and the problem stopped completely. So my question: Ya think it was just a tiny piece of dirt in the carb? Its wierd, its done it before, but not consistantly as this time. I can tell ya this for sure, its scary as hell when your running at a 80+ foot jump and the thing sputters on the face. Im fourty, I dont need that kind of excitement. I can read the headline now: Local man has heart attack mid air during motocross, lands fine, dies on ground.