Click on 'Portal" in the menu bar across the top. That takes you to all posts regardless which forum.
I'm surprised that you have three tank and only one outlet. Both of our Rockwoods had/have 3 tanks and two outlets. If there's only the one outlet, the gray and galley tanks must be piped together.
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63