I just got started tonight taking the tranny and transfer case out of my 1968 FJ-40 so I can replace the clutch and convert over to manual shift (thanks again Stew) and I noticed that my gas tank has a very small leak. I have noticed a gas smell in the past and even though there has never been a puddle of gas, I see on the floor of the cruiser where the leak is. I guess it is time to take the tank down to a radiator shop and have it cleaned out and sealed. Is there anything special that I need to tell them about what I am assuming is a tube inside the tank that draws the gas out?  o they just send a puff of air through it when they are done to make sure that it is not sealed also?