I've got a 20-plus year old Feather 400B that never failed me ... until packed into the BWCA a month ago. Clean fuel, plenty of tank pressure, fuel flowing thru the valve, but nothing getting thru the generator. I dissembled, soaked the gen tube in carb cleaner, tried to clean the orifice, but still nothing. I cannot find a replacement generator on the web. Can anyone offer advice?