I seem to have a minor leak at my lift pump. I already replaced the short hose that clamps on the pump's input last year and it doesn't seem to becoming from there. There is no fuel clinging to the lowest point of that hose. The leak appears to be originating at the hard line output that threads into the pump since the residual fuel is clinging onto the lift pump itself, very close to that connection. Does it use an olive or an o-ring to seal? Or is it flared with no added seal?