I fixed the problem by replacing the duovalve(monovalve). I took my meter with me to the junkyard and checked 2 possible replacement parts. Both read 0.00 ohms across both poles. I had the guys there check operation by applying 12V across each set of terminals while I blew as hard as I could into each pipe. Ten minutes after starting I had the valve replaced and everything was wonderful. Cool air out the side vents and main vent, or warm air out of both. I saw the heater core temp held around 125F when heating and dropped to around 90F when cooling. Only cost 85.00 for the part which I was confident worked before leaving the junk yard.

Still have my problem with the CCU not remembering it's last setting on startup, except once in a great while, but that's so minor I won't spend anything now to fix it.