I was riding on a track Sunday that had a long flat straight that I could full tilt for almost a minute. There was a tight turn at the end and on about my 5th lap not much happened when I rolled off the gas. The engine was revving like it was stuck at 1/4 throttle. The throttle felt normal, no slack in the cables, and after I shut the bike off it sounded like the slide was snapping shut like normal. This has never happened before and it was a bee-yatch trying to get it going again, and I had to constantly blip the kill button on the ride home to get through the tight stuff. I took the air filter out when I got home, everything looked fine, and started the bike without the filter, same thing. I haven't popped the carb yet but was wondering if anyone else has run into this.