I changed the source vacum line up to the tee near the switch and still not opening all the way. I guess it could be a bad actuator or a vacum switch under the the control panel. I was hoping it would be something simple. Maybe I'm not getting enough vacum but everything else seems to be working. Defrost and defog, Heater. The door closes when on heat. I feel like the door needs to open all the way on Max. Any suggestions?