That's a good tip with the temp probe. Mine is just hanging out in the back of my fridge, but I have used it for so long that I have a fairly good idea at what temp to set the fridge to to get the right ferm. temp.
Although last night after lying in bed I was like, "Damn!, I need to turn my temp. probe up a few degrees so my ferm. doesn't get too low". But then I fell asleep, good thing it was all good this morn!