Gday guys, Bike is a VTR250 2006 model. Ok, so ive noticed on my new ride between 4500 and 6500rpm my motor seems to be bogging down intermitently. When im accelerating up to speed its fine, but when cruising on about 60klm/h and up its doing the bogging thing, at first i thought the other day when i was doing 80kph it was wind buffer but its starting to do it at 60kph now too. If i crack the throttle past the bogging revs, it revs up fine. To me it feels like its not sparking properly, or maybe something to do with the choke sticking a little?? Im running Shell V-power fuel and the bike had a major service on the 28th April 11 which was a little over 300k's ago. The owner hadnt ridden it much at all between then and a little over 2 weeks ago when i took ownership. Anyone got any ideas on why it might be doing it? Im considering taking it to my local shop tomorrow as thats the guys that have serviced it since new. Id just prefer to try a thing or two on my own before i pay someone to do it, im pretty good on the spanners. Any ideas? Cheers, Alan.