I have a 1995 Genesis, with Mercruiser 4.3 carb engine. Boat has been sitting for 2 years plus. I want ot drain the gas but there is limited access to the tank other than the fill hole. Is there and easy way you guys have learned to get the old gas out....I'm thinking of disconnecting the line at the carb and pumping it out from there?? Maybe it is just as easy to syphon from the tank fill hole?