HalcyonDays

I suspect that the blend door acctuator for my car is malfunctioning. My heater stopped working last year. All vents blow cold air. Okay, whatever. As long as the AC works! Well, this year I noticed that the two vents on the driver side blew a bit warmer air while the passenger side is cold. I'm suspecting a blend door issue rather than a clogged heater core or failing AC compressor. But honestly who knows any more. It could be two issues because this car hates me with a passion.

So, I read that there are two blend doors? One that is easily accessible in the driver foot well, and one that requires a complete disassembly of the dash, which is a $1k job. Is that correct? I found the tutorial for replacing the one on the drivers side, but have found no useful info about the other one.
Help me out guys. How should I go about this mess? Thanks.