Bought a Hyosung MS3-250 On 6-11-2008 and it has been in the shop on 6-16-2008 and has not been fixed. After the engine warms up After 10 minutes the motor reaves up around 3000-4000rpms. There is not a vacaume leak. Teck thanks one of two things a electical problem or something to do with the gas. And says there has been a hand full with the same problem but no sullations. Korea Is aware of the problem and seading support over first week in June.