I have removed the gas tank from my XK 140 as part of a ground up restoration. There is some spotty rust inside but over all, after cleaning the outside, it's in great shape. The local radiator shop does not want to boil it out so I'm wondering what other options I have other than taking it to Seattle? There's some crud rolling around inside as well and the bottom drain plug is really stuck. I'm afraid if I reef on the drain plug too much I may end up causing a leak. Any thoughts? Mac