[silverbullet18]

Well we just took our new Cougar out for the first trip and when I got to the dump station i noticed that all the valves were in the open position from the dealer. Needless to say it wasn't a fun adventure. Problem is I have two drains one grey on the rear for the kitchen and one in the middle for black and grey. My first question is what happens when both valves are open at the same time with the cap on. Does black water have a way to back up into the gray because it seemed like waste coming from grey and black when I dumped them. My other problem is that the black doesn't want to completely drain and I'm worried it got clogged somehow. Not sure what to do.


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