My tank isn't peeling, the sealer is dissolving and getting into the fuel. Part of the problem is that I didn't have much fuel in the tank and didn't drive it very much so I think I am getting a concentration of the goo. I may need to do a temporary set up that is on the Ford Garage that originally came from the Ford Barn:
http://www.fordgarage.com/pages/kellyshutoff.htm
The sealer feels kind of like a rubbery coating that never got hard. It worked great for years but things change. Putting a lot more fuel in the tank may help or at least E85 then drain it out. Starting to make a rear mounted fuel cell look good.