Good point about the broody breaks Chickencanoe! I think we get so focus on trying to keep everything perfect we forget the natural process of the broody! I have read some incubators now have a "natural cooling" feature to imitate the broody getting off/on the nest...but mine is the good old simple still air, no frills batorKeep in mind that a hen gets off the nest anywhere from 30 minutes to a couple hours roughly every day so I wouldn't be concerned at all if temperature in the bator drops to 95. The internal egg temp is still way up there. As hatch approaches the embryo is also generating some of its own metabolic heat.
I just had a chick hatch a few minutes ago. There's a couple more eggs in the hatcher. When I walked into the cellar I saw condensation on the glass door so I knew something was up.
I've been adding eggs to the incubator roughly every 3 days and I got pretty lax on a few of those in recording date and time of setting. I was guestimating when to move them to the hatcher and then cross referencing with candling. I've been moving them when I guess they're about 3 days away and turning slightly each day in case they were further away. For the last 3 settings, I've kept a chart plus writing the date on the egg.