And I have a quick question - will it harm the eggs in any way if the temp is not consistent at all times? I'm asking because my thermostat is not proportional and the temps are between 87-90 F (It's not 88 all the time, but it's changing between 87-90). I was wondering since both 87 & 90 and between are ok for balls, but is it ok if the temp changes in that range?