By Gum! That was it!
Machine has been fixed!
Which problem was the culprit? Inlet valve, pressure chamber, mouse debri surounded styrafoam float switch? Who knows at this point. If I had to bet I would say that it was the float switch surrounded with mouse debri. I charged the owner for the new water inlet valve and ate the cost of the new pressure chamber. I just didn't want to pull that sucker out one more time and replace the new parts that I had installed with possibly faulty old ones. Chalking the expense up to the cost of learning and I learned a bunch on this one. Thanks so much for staying with me on it. Good job!