I have a Hovabator 1602 still air incubator. It has held temps just fine until this week. This week it has been all over the board! I have the thermostat turned all the way up (it won't crank any higher) and the bottom of egg temp is 99 and the top of egg temp is 100. I was told it needed to be 102. I am on day 17 today. The outside air temps have been freakish this week. We had a freak cold front and the house temps are in the mid 60s as opposed to the 70s it has been. Do I need to turn the house heat on? I've had it off and have just been running around in a sweatshirt. So for the last two nights the incubator temps have dropped down to 100 or so. I've managed to get them back up to 101.5 during the day. Humidity levels have been in the mid 40% range. Am I killing these babies? What do I need to do to fix it?