LR Jerry's right, these are a tinkerer's delight! Welcome to the hobby. You started with a good bike, lots don't. As for power, these carbs are jetted too rich from the factory, so leaning it out will help a lot. They come stock with a #70 jet; mine runs great with a #62 @ 900ft altitude. Play around with the needle also, it's free horsepower and really helps with idle and part-throttle performance.