2014 R31cb, I have had to clear debris from ours twice . It was floating behind fiberglass so reinstalling was an ordeal. Inside you will find it has two valves used to shut off water to test before walls are closed up in residential construction . They can be closed and opened with screw driver once you have removed cover . Saw mineral deposit or bits of fiber glass come out when cycling valves . Then I was back to full pressure. Now you have a floating diverter and two long screws ( 10-24 ). Royal PITA . second time I purchased 6” x 10-24 SS screws and SS acorn nuts to secure to diverter valve . Found them at Bolt Depot . I don’t want to tell you how much time I spent looking for M5 bolts and they were not. Hope this helps