I have a Little Giant still air incubator that I just bought an air fan for. We put the eggs in last Wednesday and everything's been fine until today. We turned the eggs and I candled one of the eggs because I think it's a quitter, but we're giving it a few more days to know for sure. We closed it up and the temperature was of course low from opening the incubator so I turned up the heat. We didn't know but the incubator was at 103 degrees for about an hour. We've been working for over 2 hours trying to get a steady temperature like it was before. It goes down to 97 then we turn it up very little and it shoots up to 103 within 2 minutes. Then we turn it down very little and it goes to 101 for a minute and then back own to 97 it goes. We're not sure if it's the incubator or the built in thermometer. The thermometer has to be somewhat accurate because our eggs are developing but could this problem be the thermometer any way? We have places to go and can't take a chance leaving it alone and the temperature getting too high or too low. We have 3 eggs in there from one of our Silver Sebright hens that was killed by a possum last week and we want them to hatch so we can raise her babies to remember her by. Please help! What can we do? We can't get a new thermometer right now and have none available around the house.