I just got a 2001 ds650, has a Ron woods cdi box, pro circuit t4 exhaust, k&n filter, a few other things , anyway it ran perfectly for me tons of power no weird sounds looks brand new, I rode it around in the woods today for about 3 hours fine no problems at all, I turned it on and off about 15 times and it started everytime no issue, than towards the end it just shuts off and won't star back up, it turns over but won't start, I thought I was out of gas maybe even though it looked like a quarter tank at least so I put it on reserve and nothing still, I thought maybe I had flooded it so I left it alone for five hours and still wouldn't star and now my frigging battery is dead, anyone know what it could be? It has never not started before it always runs perfect, than nothing, the lights and fan and everything still came on but it just would not start, it wanted to, I'd appreciate any help or tips at all, on anything about the ds, thanks