after further looking into my carb opening it appears to be around 3/8 inch wide. the brass tube thing could be a possibilty but wont look too pretty being as it will be seen outside of the cowl.. the fuel line will also have to be of a larger type.. i was wondering though if maybe some sort or foam filter over the carb opening might work? wouldnt it keep the air from causing a suction inside the carb? i know it will also restrict airflow too but just throwing around a few ideas.