I locked down last night. With the egg turner out, thermometers lower, increased humidity, and both ventilation plugs out I can't seem to regulate the temp. I had excellent control in the first 18 days. I have 2 thermometers,a digital thermometer/hygrometer and the thermometer that came with the incubator. They have varied a bit but now are showing 4-5 degrees apart. I woke up at midnight and the digital showed 100, turned it down a hair and this morning it was 95 with the other showing 99. Which thermometer should I trust? Is a slightly lower temp in the last few days OK? I am worried about turning it up after what happened last night. Today is day 19.