I just finished rebulding my ole 3 hp Lightwin with rings, carb rebuild, ignition coils, points , plug wires and water pump. After reassembly and the proper adjustments, the motor fails to fire. After pulling on the cord for a while it did fire but for only a few seconds and not long enough for final needle valve adjustment. I checked the points and coils and they all seem to work fine. But the carb dumps fuel from the carb front when choked, could this be a reed valve problem, I AM STUMPED! Also, how stiff should the motor turn after the new rings and waterpump?