The see thru waste elbow told me that doo was coming out when I released the grey valve. My assumption was that the manufacturer installed the valves on the wrong side. Everything works and I was just going to switch the valves myself but when I was going to do it I decided to look at the plumbing schematics and lookup and behind the valve panel. What I found is the wrong size plumbing. The reason I waited was just never got around to doing it but now I’m retired I have a lot more time. I was just wondering if anyone else has had this problem. If you don’t have a see through fitting you wouldn’t know you have a problem at all until you got clogged up.
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