Had my bike running well, still breaking it in on the second tank of gas. Was going down level road pushing it to WOT for ~5 seconds every other minute. After one such WOT, the bike suddenly lost a lot of power, but it did not die. I could let off the throttle entirely and then pull it back up and the motor would respond, but after about 60% or so the motor wouldn't rev any higher. Also sounded like it was idling higher, and after I let it sit I tried to restart it and the motor revved for a couple seconds then died. I have not been able to start it since. Any ideas?