its time to change the fuel filter. i 'd like to replace the gasket that goes between the inlet nut and carburetor at the same time. unfortunately, i am unable to find one. i checked the dealer, autozone, and o'reilly's, but no luck. does anyone know where i might find one? its a rochester 4mv carb. i did have some problems with leakage in the past but applied some permatex high temp thread sealant, and it stopped.