lol! its all good, I kinda figured something was up since i know ur a pretty frequent member here... hah!
I have been misting all the time and after asking several local pesstores (my friend is a manager at petsmart and is mainly in charge of the reptile section, has some crazy stuff...) said that the airflow would be compromised even of it was slightly open like you suggested, and said that is more of a priority than humidity...
So, im just wondering how do you keep the air fresh in the tank with a glasstop?