I have an '07 T100. When I bought it i had the dealer do the pipes/airbox/ai/k&ns before i ever rode it. It has only had one problem. Sometimes when I "exercise" it, the engine quits dead when I let off of the gas. It acts more like the ignition quit than running out of fuel. No coughing or sputtering or anything. This has happened 4 times, each time with a full tank. The first time I got to the side of the road and tried to get it started, let it set for a while and tried again. Nothing. Then on a whim I turned the petcock to reserve and it started right up. The next 3 times I turned to reserve while the bike was still rolling and it started right up each time. I cannot think what could cause this except a faulty petcock. Has anyone else expereanced this, and if so, what was your solution.