It doesn't sound like a restriction in the faucet if it works with the pump. You may to pull the back wall out in the basement and look at the water lines to see what the problem is. I saw one that had kinked line but it didn't work with city or pump.
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Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
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