Reeds wont fart will 25-28, not that. Carb may need an air filter. Id start by examining the exhaust port off your jug, bought 1 of these once that did 10 miles an hour, the exhaust port was so clogged it was the size of a straw. After cleaning the carbon from it, did 28mph. Could also check your throttle cable and make sure it is opening the carb all the way. If non of that works, Id buy it off you for 150$.