Paper filter needed replacement, and genuine K parts replaced filter, bowl and 2 o rings. But, slow leak after, as if a gasket missing. There is no shut off fuel valve apparently on this model, so leak continues. Is there supposed to be a gasket inside the receiver housing for the screw on bowl? Not listed on official parts diagrams that I can find. Or are there other leak sources. the line in never moist, the top of the receiver housing never moist, just the one side of the bowl.