I have a 2000 Banshee with full port cylinders, light flywheel, adjustable timing plate, cool head, vforce3 reeds, 35mm keihin carbs, and override transmission 2-5..... I recently did a tune up went from 91 octane to 110 (oil ratio 40:1,) also went from NGK(BR9ES) to NGK(BR8EG) cause someone told me to run it on hotter plugs, another thing is I put new carb kits, but since I did those changes the bike bogs a lot at the take off and when hitting high rpms in 3rd gear.. Some people say its not getting enough fuel some say its the sparkplug??? any suggestions......