Proportioning Valve Leaking

[Lazydog]

Hi All, my proportioning valve started leaking the other day, I was just wondering what would cause that. It's leaking between a 2"nut(that has the rear brake line to it) and the valve. The rear brake line is extremely tight. Any suggestions about getting it off without cutting?

 

[scrappyk5]

mine did the same thing , i tighten the sh$t out of the lines and it seemed to come from elsewhere , so i went to the junkyard and got another one for $25.00 . easy to replace