I have an 80's Aquasport with a 50 gallon tank and 1995 200 HP Evinrude Vindicator. I opened the gas hatch to check the tank and smelled fuel. Now, it is possible I have been putting too much gas in the tank. I always put 5 gallons in even if I didn't use the boat much. Could it simply be that, or is it possible that I have a leak somewhere? I don't smell any gas in the cuddy cabin. It's a pain to remove the floorboard to get to the tank, and re-caulk it so i'm hoping that it's not a leak. What options do I have?