HELP! Any ideas about this problem?

[sportpsyc]

I just went and started my 2001 bike to go for a ride. It made it about 75 feet running fine, and suddenly started missing and running TERRIBLY. It sounds like it is only firing about every 8 strokes rather than every 4. It idles perfectly--only when you twist the throttle does it start. So I turn around and idle it back in 1st gear, and check this out! Whn I put it in neutral, it runs great--clutch in or out. But the moment I put it in any gear, even sitting still with the clutch in, you cannot rev ethe engine. It is 100% predictable and related to putting it into gear--but not moving or being under a load. Neutral=perfect, gear=will not run over idle. What in the hell is this, does anyone know? It did this once when the battery was dead and it was trying to run off it's own electrical output (did you notice how I avoided that one, Easy Rider?), but then it wouldn't rev at all under any circumstances, neutral or not. What relationship this thing has between the transmission and the electrical system is beyond me.... Man, and I really wanted to ride to work tomorrow. :cuss: Sigh....