Fuel Injection Rail problems of the 2004 Subaru Outback

2004 Subaru Outback, h6 (6-cylinder) with a faulty pulsation dumper/damper valve. Part of the fuel injection system, the valve assembly sits above the intake manifolds on both sides of the engine. The passenger side valve (metal construction) was literally weeping gasoline (strong smell inside cabin was the tip off). I removed the assembly and replaced the hoses first, but the valve was leaking through the top surface walls (not a seam). Awaiting replacement parts now. It appears that the foam cushioning material underneath the metal fuel rail protector was in direct contact with the valve over an extended period of time. Corrosion of the exterior valve wall is the most likely culprit. Subaru claims they've "never had to replace one" (3 dealers) and had no idea what the valve even does. Luckily, I observed and will have corrected the problem before a vehicle fire. This is an imminent threat for other h6 owners with this valve configuration. If corrosion of the valve is present at all, the valve should be replaced immediately. Subaru was uninterested in examining the issue or the parts involved. If the valve leaks more, the runner lines adjacent to it would quickly melt and the car would be destroyed.