On my Dutch Star there is a filter screen that is in a housing that is threaded onto the inlet of my pump. I had a similar flow problem and found I had some black slime restricting the flow through the metal screen.
I removed the screen housing from the pump and disassembled it and washed the screen. My flow problem was fixed.
Does yours have an inlet filter screen between your potable tank and your pump?
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Greg & Karen
2022 Arctic Fox 990
2022 RAM 4500 4 x 4 diesel crewcab
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