about a year ago i was trying to troubleshoot a no heat issue...long story short it was a clogged heater core. in my trouble shooting i removed and messed around with my blend door actuators. I've since put everything back as best as possible but now i don't have the settings properly placed for my vents. mainly the defroster is my biggest issue. my wife drives the car. every store I've looked at online doesn't have the actuator on the side of my blower motor... i did come across a gear up in the HVAC guts that controls the defrost vents and come to find out when i flipped it, the gents blew full blast but upon moving the vent to another position and back, the gear/flap only moved about 1/4 of the way open. so now im trying to figure out if that gear or what have you is controlled by a vacuum line. can anyone help me out?