Hmm, maybe you thermometer is just a smidge off even though you calibrated? I had pretty much the same conditions as you and my chicks are hatching almost 2 days late.
The only other thing that comes to mind is maybe you have cooler places in your incubator (other than where your thermometer is sitting). Do you use a turner? Did you move the eggs around so they could be in different spots in the incubator? Even if you didn't, I'd think you'd still have some hatching by now.
I guess I don't really know
But I'll be
for you and your chicks!
The only other thing that comes to mind is maybe you have cooler places in your incubator (other than where your thermometer is sitting). Do you use a turner? Did you move the eggs around so they could be in different spots in the incubator? Even if you didn't, I'd think you'd still have some hatching by now.
I guess I don't really know

But I'll be
