Im not a man to argue, you made your own and it can't be the incubator has to be the eggs even though everyone else has had no issues. World just must be conspiring against you, I hope the world sorts itself out soon. Best of luck.
nothing specific, my incubator just came with a piece of paper on how to diagnose problems and all the symptoms were reduced hatch rate and it could be something as minor as being just .5-1 degree off at the egg area of the incubator. Especially if your thermostat sits elsewhere (not where the...