Hi. I have model 1582 Hovabotor incubator that I have been hatching coturnix quail eggs with. I have hatched 1 batch per month for the past year. Just lately I cannot get the temperature above 90 degrees farenheit. I tested the thermometer in another incubator and it works fine. l I do not use a turner. Does anyone have any advice, or know what the problem is? All replies are greatly appreciated! Thank you.