Ok i just bought a manco tbird with a H35 motor it sat out side about a year, so i drained the gas tank put fresh gas in and tried startn it bout 10 times and nothing so i pulled the carb off. When i took the bowl off there was not a drop of fuel in the bowl just rust and corrosion. What is the best way to get this back to good running condition or am i best off replacing the carb with a new one?