[Face Down]

I have the same problem on my new Carbon 357 with one of my black tanks...I know it is the black one because the "stuff" in the pipe in blue and must be from my post dump 2-3 gallon fill of the tanks for storage. Fixing it is going too have to wait...have to much camping to do over the next three months but I will get me one of those Valterra Terminal valves...thank for the tip!