Ok , looking at a labor guide it calls for 4 and a half hours to remove that actuator. It is listed as a floor/defrost door actuator. That time does reflect instrument panel removal.
Thanks for your info and assistance, Tex. I'm not going to remove any dash from a vehicle (I've done a simpler one many years ago and that was enough!). My thoughts now are to try to see where the under-dash vent doors (that are obviously closed) are and try to manually open them. I wouldn't be opposed to having them in an open position 100% of the time. Thanks again and I'll keep you updated.