I've located the low point drains and fresh water drain hoses The issue is, these are not caps but black plastic valves. I cannot open the valve, is there anything special I need to do (i.e. loosen middle screw?) Sorry, I do not have a pic right now.
Interesting, so what did you do to open them? I always feel like I am going to break the valve.....
Honestly? I just took a chance and cranked on it. You can see the positions of the valves and how goofy they installed them. So if the valve is on your right and facing at you it should turn up to open.