[Gas Man]

first off... jet fuel is a distillate. Closest thing to what normal people think is Kerosene. DO NOT PUT THAT IN YOUR BIKE!!!!!!

Second, while I think dumping the old gas for fresh fresh stuff and running seafoam and new plugs is a good idea. I'm leaning more towards electrical. I would check/test all the safety switches first then go towards the ignition system.

This is where I tell you... buy a service manual as well. It will tell you how to do all the above.