Day 12. The havobator is full....just one egg cup empty. Not enough to place the flukers in. SO, its' sitting on TOP of the eggs. I'm getting a strange fluxuation in temps, about 3-4 degrees. 1) I've never had the bator this full and 2) The thermometer has never come in contact with the eggs. Does it's placement distort the temp? Or, is it more difficult to stabilize, as the embryos develop?