let me start off by saying the shifter kit from SBP is great makes my ride so much smoother. My problem is that i have a top speed of only 28mph and thats only achieved going down hill in my 7th gear. i can cruise at 23-25mph but when i try and go faster it just does not want to go any faster, and the motor just doesnt have the power to go any faster. So far i have sealed the intake manifold to carb with silicon, sealed the intake manifold to engine with silicon, i have a new champion spark plug, a new ignition wire (after i replaced this i was faced with the disappointment of only 28mph because my ignition no longer kills my speedo), and i moved the c/e clip to the top most position on the needle (did not make a noticable diffrence) after my first movement to the lowest postion on the needle made it run like crap (it runs the same from what i can tell being on the second notch from the top as it does on the very top notch). Have i done something wrong or is this typical of a mostly stock "80cc" motor? Ohh i am running 20:1 gas mix premium 93 octane fuel. not sure how many miles i have on the motor but it is atleast 20 miles. i believe i should atleast be able to hit 30-35mph with the shifter kit, but my motor is just lacking the balls right now. Please advise.