I have a TTR230, and have been reading all the stuff about re-jetting, air box mods, and so on. I assume that my bike, which is an '07, was factory jetted for riding at sea level (and maybe in California, also). Where I live and ride, the elevation above sea level is about 2500'. How should that affect the way the carb works ?? I know that the higher you are above sea level, the less dense the air.... therefore it would stand to reason that my bike should need more air for the 'sea level' jetting setup to work. The bike acts like it wants more fuel, but is re-jetting to larger jets the way to go ?? Help !!