Stop in for a cup of coffee

so after spending the entire day, ripping apart the wife's durango to replace the part the dealer said was wrong with her climate control system, and putting it back together, which involves pulling both front seats, center console, dash and heater core... problem still isn't fixed. At least it saved me 2900 bucks.

Its an 07 with dual climate control. Passenger side and rear compartment AC both blowing nice and ice cold. Drivers side is stuck on heat. Dealer says its the upper blend control module, replaced it. I did check the door while I was in there and it spun freely and i double checked the alignment.