I am removing my front and rear axel on the old K5 and can't seem to get the brake lines loose. I am trying to remove the flare fitting at the metal line coming from the frame in the rear and it will not come loose. I have soaked it in rust eater and all it is doing is stripping the nut. Is there any way to reflare the metal line and put a new nut on it. I am about to get the vise grips after it if so. I need to get this loose so I can put in an extended brake line for the new 14FF. Thanks for the advice.