He-he, they always claim we "don't know what we're talking about"...that's why we marry 'em, right?
I'd try removing the water inlet hoses from the wall and where the connect to the washer, as sediment can accumulate over time in the ends of the lines. If the hoses were installed correctly, there should be a couple of filter screens in one end to protect the water valve from sediment. These can be popped out and washed. In the back of the washer are 2 more screens which are a last defense for the water valve in case no one put screens in the hoses. These screens in the valve can be cleaned using your wife's favorite turkey baster to suck out any visible sediment. Do not attempt to remove these screens (trust me).
Since water flow is crucial to the operation of the dispensers on these machines, any decrease in pressure, such as that from a clogged hose, can affect dispenser operation. Give it a try, you might score tonite