Hi. I'm hoping we have calibration experts here After losing some silk eggs in my incubator and reading a lot about how to calibrate a thermometer, I decided to calibrate mine. I have a digital thermostat with external sensor. First I calibrated using freezing point method and then I tried using water boiling method to check if calibration went correct. But results are contradicting. See... Thermometer registered 32.6 F inside freezing point. So I adjusted it to 32 F. After calibration... Thermometer registered 211 F inside water boiling. It was supposed to register 207.5 F, according to http://virtualweberbullet.com/boilingpoint.html as I'm at 30.01 inHg and 2290 ft. (I even tried using my barometer to calculate boiling point, but it was supposed to register boiling point at 207.3 F according to the results.) So what now? My thermometer is correctly calibrated 0 F at freezing point but 3.5 F off at boiling point. What should I do? Thanks.