I am no expert. All I know is that when people I know, including family, cannot get their problem solved, they keep going to different doctors until they find one that has answers. Don't give up. ...
We added a new addition in 2007. They installed the 2 outside faucets with vacuum breakers or anti-siphon fittings- whatever they're called, and now both leak badly. We can't get the VBs off, and...