On my passenger side wet bay where the manifold is in the bay just forward of the rear wheel, there are three drains. Two of three are leaking and I'll need to isolate them to replace the small valves. Does anyone have a fresh water diagram and/or know their sources? I thought possibly hot and cold water manifold drains and possibly another for the filtered drinking water side (fridge and small sink faucet) but not entirely sure. Much appreciated.