I bought a Hovabator with a fan awhile ago and as per instruction I set it up and regulated the temperature for a week before I put any eggs in it. It regulated the temperature just fine. I didn't have any problems so I plopped in some eggs. For two weeks everything went well and then my incubator lost its mind. I thought maybe the cat was rubbing against the thermostat or something or maybe the fan was wiggling it up and down but basically it does not keep the temperature constant AT ALL anymore. It's gone everywhere between 86-103 and every time I look at it its different. I muck with it until its exactly the right temperature and then a few hours later its back to doing this! The temperature outside the incubator is constant so I can't blame this either. I am confused and seriously annoyed. I have major doubts anything will hatch now. I think they've been pretty well cooked.