When you log, you go into "monitor-datalog-ok" then just click the first thing listed which is one of the AF ones, and it will say "not logging" then you click the middle button again to start logging....this what are you doing? On mine, I don't have to go find one of the certain items I checked to datalog all of my parameters I "x'd". I just click the first one and hit the button again to start logging. Then my logs show all the stuff I chose...and it won't show the AF parameter I clicked on unless it's in the datalog list. This make sense?