We are building a RV7 and in two minds about the issue of extra fuel due to our vast country and the availability of gas.After attending a Paul Bennet Airshow (aerobics and warbirds) on the weekend I came up with an idea as I want a smoker as well.2 x 7gal Smoker Help System tanks that look nice and got in the luggage compartment behind the seat and loosing little room.Use one for fuel and one for oil with the ability to use both for fuel.They are removable in 10/15 minuets.Has anyone done this and what?s your thoughts.