"I think if you tested all of the "AC techs" in the country you would find that many do not understand the basics."

That is VERY true... unfortunately...

I try to read a learn that stuff... but I can't make others do that... so I just try to boil the stuff down to absolute essentials in terms of what NOT to do...and try to keep people from hurting themselves or others...

Plantman... did you mean Larry ... or ME ? LOL