Thank you all for your input
Devilsrighthand, you are the bomb! And thanks, tampc for the pictures. I have been living with getting A/C out of the vents by selecting Vent/Floor. Well, it just crapped out.This has been one of the most easiest and rewarding fixes I believe I've ever had in my 35 years of working on (my own) vehicles. I think I had the entire R&R within 45 mins. As I was re-installing the unit, I thought, noway could it have been this easy...it was! Not that I have special skills, but after working on Shuttle components for a living, I've learned to follow written instructions. "Devil", those were spot on! I didn't check the entire thread, but I may be the have the lowest amount spent: $.85 on 4 o-rings from ACE Hardware. The only thing that I may add is forget about the home improvement giants. They don't carry the size needed here. ACE's size is, (it may be a standard) #007. Thanks again for a huge savings fro the Ford dealer!