SSBC proportioning valve questions
stainless does not need to be double flared. standard steel does because it has a seam that will split if only single flared. dave's right, a regular flare tool will not flare stainless.
another idea is to get a big pipe and roll the brake line over it to create a couple of bends to take up the slack instead of cutting and flaring. in a sense creating an "S" shape.