This customer has a leak whenever they run water on the sink. The water will leak down to the gasket through the bottom of the sink with the vanity down through the supply lines. There’s no active leak by running the water on the drain or the supply lines, but when water is used and splashed on the counter, it gets wet causes the issue, and as a result, the gasket would be have to be replaced and or the whole faucet gave recommendations of what should be done at this time. There’s nothing I can do until the replacement gasket comes in pressure is fine tankless water heater is fine. The customer was interested in water filtration so I recommended a couple different options and he was also interested in the Moen flow. He will let us know when he would like to do that as well.