I own 2012 LT. Been one the best vehichles I have ever owned.would'nt kick into defrost mode. actuators working just fine. Turns out the mode door lever on the defrost is broken, the little gears are broke off. The dash is off to do this repair. As I wait for the two new levers to come in from dealer I'm trying to figure out how to align the gears. Should I put the defroster fully open or fully closed? I just dont want to break something when put power to it after assembly and find out I was a tooth off. Does anyone have any info?