WOW!

What fantastic advice! You guys are well informed on AC. I can't tell you the number of times I have seen "mechanics" charge the system with the can upside down and to the suction side.

Now I wonder who I can find locally that "knows" what they are doing, since my AC acts like it may need a charge (the pressure switch is not activating the aux. fan).

This may be something else I need to learn to DIY in order to have it done right. I am a little hesitant about doing it the first time, considering that a inexperienced error can cause major consequences.