Oooh, Joyful, I'm happy to hear you got your thermostat wired up OK. I have a slightly different version of this thermostat wired into my Hovabator; the temperature differential on the WH7016 is 1* and the Hbator NEVER goes above 100*. It often drops lower than 99* and it takes a bit of time to get back up to 100*, so I think my hatches in it ran on the low side. I've thought about setting it a little higher, as you have done, and I've thought about replacing the little 25 watt heating element with a quicker responding heat source (?light bulb), but the Bator box is so shallow it's hard to do safely. Sooo, I'm using it as is for the time being. 103 is kind of high. When I put my eggs in, the temperature drops a couple of degrees for awhile, and then it stabilizes between 99 and 100. If you think your temps are too high, you can try placing the sensor up closer to the heat source, so it gets up to temp faster and shuts off earlier. I, too, have an independent temperature sensor probe that actually hardly ever agrees with my thermostat probe, but ALL (I have several) of my digital thermostat sensors agree within a few 1/10's of a degree of each other. Your LG is a circulated air Bator, yes? I tried testing the temps in different locations in my HB, and I was actually surprised at how consistent they were. Your dilemma makes me want to test them again. What do you think of putting your probe inside a "gelatin" filled plastic egg? GOOD LUCK WITH YOUR HATCH.