The thermometer that came with the incubator was almost always sitting at 99.5 I let it set for 4 days and made sure it was adjusted to that. Using my hand held laser gun thermometer, the interior of the incubator reads nothing higher than 93'. I have a digital thermometer to set inside, and while I can test that for humidity, I cannot confirm its accuracy with temperature. Any ideas?
Laser thermometers are not super accurate. Use a thermometer that reads in tenths--so that you can see 9.5 for instance. There is a big diference between 99 and 99.5 and if the thermometer does not read in tenths, you can be anywere in the 99 range.
Verify and calibrate your digital thermometer.
I use a brinsea spot check--They are very accurate. Bama has one now and is having great hatches!