I've been incubating eggs in there for 16 days now. For the past 5 days, my incubator keeps having spikes!!!!! I'd monitor it for HOURS and it'd stay at 99.5. then i'd leave for 20 minutes, come back and its 104!!!!!!! I'm so irritated. I've used that incubator for 2 years and hatched ducks and quail in it and it didnt have this problem. i have 6 live eggs in there right now. i was wondering... i candled the eggs, and i still saw veins after there was a temp spike. is it possible that they will stay alive after the spike but die maybe an hour later??!?!?! I'm so scared and worried... I'm even missing dinner with my family just to monitor this dang thing!!! it's homemade and its forced-air, and the thermostat cost me $45 so it should be good.