One more thing. If you consider repalcing the tank, I think they are about
$300.I would remove the old tank(not hard to do), and pour some paint down
the inside.Maybe a pint.Swish it around real good, and let drain out any
leftover.Let it dry,upside down to drain more. This would coat the inside
of the tank and seal up any flaking rust.While the tank is out, you can
repaint the exterior. Just an idea.