o.k. guys and gals, back to this water logging problem. this is an antique setting of air tank hanging and submersible pump in a dugout spring well, it is shallow. we drained the tank(huge galvanized air tank) a couple of times completely, but in a month or so it is back to its water logged state. is there another gadget that we are missing, to adjust? does the pressure switch have anything to do with this. ? we have left this alone, figuring it just was pressure regulator.........any thoughts on this????