I just bought a hova bator 1588 off of ebay. It's in great condition. I'll be putting quail eggs in it next week and wondering about how accurate the thermostat is when it's factory set. The directions say it is set to 100 degrees F. Is there a way to calibrate it? The directions also say to try a hatch to see if it's accurate and if it's not to adjust afterward. Can't I avoid loss by checking how accurate the thing is beforehand?