I have a printed off set of instructions on how to do this and DH and I are as confused as each other. We have toggled some switches that seemed to be what they were saying but I kind of wonder if this was written by someone who isn't too good at explaining things (or else it is just my brain being challenged in a direction it is not familiar with ) I was wondering what you all do? Both of my thermometers are reading the same and I have had this problem before (just can't remember exactly how we resolved it) I know I called the company about it and the person I spoke to (years ago when we bought it) insisted that my thermometers were all wrong and I should leave the 'bator as it was set. After disagreeing firmly with them for a while they eventually directed me to this page... and after doing some adjusting I had a really good hatch. But my brain is older or something 'cos now I am not too sure what I am doing... SO all that to say, does someone have a nice clear set of instructions on what to do? Thanks!