Summary and quick solution - freon was about 1 lb. low.
Now, for the rest...
I swapped the actuator motors from side to side and the problem remained the same, as I mentioned. The motors are the only thing that control the temperature, that I would have been looking for.
I just had the A/C charged a few weeks ago, with a new condenser in place. I had the dye added to the system, though, so I could detect a leak in the future if one showed up. I was fairly certain the charge wasn't low. Since no one would explain to me WHY I should consider charging the A/C when I had one side ice cold and the other side warm and the fan is blowing across the same evaporator, I had no reason to believe this could possibly be the case, so I dismissed it as a possibility.
All I read was "just charge it" with no reason given. After doing some reading in a forum where I came across some people willing to explain it, I began to consider it. It seems that the "cool" side of the evaporator is where the passenger side air comes from and the driver side is on the "warm" side. As the refrigerant moves across the evaporator the cooling effects are diminished by the time it reaches the side where the driver side air blows through, making it feel warmer than what the passenger side feels. This is the reason, I believe, that even though it's one system and not two separate ones, we can feel the cold air on the passenger side, still, while the driver side is getting warm.
TSB #99-01-38-005 also calls for 2.25 lb. R134a instead of 1.88, like on the factory sticker. New sticker p/n is 10442041. I didn't order the sticker, though, because it is $18.
Hopefully this helps someone and I know it's not a good technical explanation, but in lay terms, someone will benefit.
