I am using 2 LG incubators, if your using a digital thermometer and hygrometer I have notice and this is just in my experience they go crazy some times.
I went to
walmart got 2 fish aquarium thermometers , these have given me more accurate readings than any digital thermometer I still use my digital to measure humidity as well as a smaller one that has arms like a clock not sure of the name but you can get it for like 1.00 at
walmart.
I got a 100 % hatch rate doing it this way.
Don't forget to calibrate the thermometers a few people may think this isnt important but it is very important or you will get way off readings.
When you think your incubator is too hot it could very well be too low, when you think its too low and you turn it up it could very well be too High.
Calibrate,
Humidity is extremely important or to me it is , I will always hatch at 75 % from now on all my other hatches got stuck and I only went up to 55 - 65 %
At 75 % they come out perfect and zip perfect circles all the way around.
LG Incubators are very sensitive, any amount of turning can be either way to much or way to little, find your mark and leave it there but keep your room as level as you can in temperature. They are sensitive to outside temperatures also.
I would invest in a fan it does seem to level out the heat a lot better.
Good luck!