I was able to free my heater controls up. They now move, so we'll see if I still need a replacement once I get the heater system back in, but no more immediate need.
Man, I haven't even started on the dash yet. It's been monsoon season here in MD for the last (what feels like) 3 months. I was over there for a little over the weekend between downpours. Yeah, the climate controls in this thing were a little tough to slide. Probably just need to get them out and lube 'em up. Maybe the cables are jammed up a little too. Let me know on the controls, and in the mean time, I'll get busy on the fresh air box!