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!!