Hello, i have a question about the number and location of the actuators. Backstory: my 2014 300 will not close the defrost vent. Everything else works as it should blowing air whether cold or hot from the selected vent and dual zones working. This winter it added a new symptom. To change the temp of the air i had to turn recirculation on. Ive dealt with the defrost not closing by putting pleather over the vent to prevent condensation build up. Im in florida and rarely need defrost and if i do i just pull the fabric off. Anyways back to my issue. I ordered 3 actuators because thats the number i read on several different discussions. I only found 2: the drivers side right and passenger side left behind the glove box. Am i missing one? I changed the 2 out which corrected my temp changing issue but didnt close the defrost. Also, do i have to get it recalibrated by the dealer or is there another way to do this on my own. Im an aircraft mechanic with plenty of experience working on cars, just not always these modern computerized ones. Thanks for any information.