I feel for ya because I don't know of an easy way of getting those actuators out. I took a couple out of a junker and it was a major PIA but maybe the instructions help?

My problem has been the cold air will stop blowing out of the vents but I think I've narrowed it down to being low on freon. Last year we added some to it and it worked well throughout for the year but come this year I believe it leaked some back out so I added some more. I need to get a guy test it for leaks before it gets really bad!

I hope you're able to get your problem fixed though. Do you have digital dual climate control or the other one? Maybe the unit is bad?