KitchenAid Dishwasher KUDR01TJBL The original soap dispenser door would no longer stay latched, so I bought a replacement unit. The new unit does not work, not as a soap dispenser and not as a rinse agent dispenser. I see no problem with the wiring, but the wires come from two different places.....can one defect be causing both problems or did I just buy a defective replacement unit?