Have a 2-stroke Tohatsu kicker connnected to a portable gas tank. Last weekend the kicker seemed to be having problems getting fuel, and it's always run fine before then. I'm thinking maybe air getting into the line. For quite some time now, I've noticed that when I squeeze the bulb that some fuel will seep out from the fitting where it connects to the kicker. Normal? Do the o-rings in the hose fittings go bad and where would I find a replacement o-ring? Could be a bulb problem I suppose. Would rather not replace the entire hose, fittings, and bulb if I can help it but will do that if nothing else works. Thanks.