I have a 2016 PD31 and the supply line from the city water connection would kink when the slide was in. In my unit, the connection is below the small drawers to the right of the sink. Three pex lines come up out of the floor there and connect to cheap plastic supply lines. I replaced all of mine with braided stainless ones. Also I had to attach a strap around them and screw it to the cabinet frame to hold the fittings up high enough so that the lines wouldn't kink when the slide comes in and mashes everything together.
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