CANNOT GET THE BRAKE LINES OFF!

There is a vise-grip made for nuts. That and heat works. But, you can not use heat near anything that you'll use again (e.g. prop valve).

BTW: Living in New England, I know what it;s like to try to get fittings and nuts off. But, on a GM board, some gut in Florida was able to get a set of brake lines from a 10+ year old car off in perfect condition!