After testing with gasoline in the right tank for some time, with the tank in various positions, I found that there was seepage at the bottom of the inboard rib. Rather than disassemble the tank again, I had just about decided to rebuild the whole thing. While I was adjusting the position of the tank to try to isolate the location of the leak, the tank slipped off the support plank and hit a crate below the sawhorses and bent the skins at the rear of the tank. That helped me make up my mind to rebuild the whole thing, so I ordered the parts a few days later. When it came, I found that it took 2 T-711 stiffeners for the tank, and I had only ordered one, so had to place another order.