A sealant for the fuel tanks that could withstand the heat of the air frame was never developed - after take off the pilot would run the aircraft at high speed at a relatively low altitude to heat soak the aircraft - length wise it would gain about 12 inches - the expansion would seal the fuel tank seams - basically take off - straight hi speed run to a tanker - fill up and go . . .

And to satisfy expectations . . .

Have Fun! - Run the Gun! - and remember - Fish Heads are Cheap!!