Quote Originally Posted by jeffman
No, Besides temperature I know of no one who failed for any other reason. Good luck.
Thanks to jeffman and killerweed420 for your help.

I did find 1 guy that failed with qf 4.0 and he even posted the letter from the testing agency (on marijuana.com forum), but he was in Canada and a guy name lew scannon said that the testing was not legal in the US.