I'll tell you I have more time and aggravation in this tank than the rest of the bike in its entirety, but it's salvaged and looks great on the inside as well as the outside. Brazed in metal, expoxied, body filler and, evaporust and Red-Kote, prime, sand paint.
29 bikes and numerous tanks bought on ebay and never had this much of an issue with a fuel tank, must be a design flaw on these. But I'm always up to a challenge.