No good news on the rest of the hatch I'm afraid. It's just the two that made it.
I didn't eggtopsy all the eggs, stopped after I got through the ones I know had rocked in days 18-20 but didn't hatch. For most there was no cause of death I could discern other than likely being from heat. There was one that looked like it was a case of too-small air-cell -- for some reason that air cell was significantly smaller than the others through out the hatch. I was too discouraged to check the eggs beyond those, though I should have for a more complete picture.
My temperature/humidity logging device finally came in, so that will help get a more complete picture going forward. I can get it to pull data down every 3 minutes for the course of an entire hatch (30 days max at that sample rate). Right now I have it in there pulling some testing data on the out groups' hatch.
When I use it for a full hatch I'm going to set it to pull every minute and just keep it plugged in so I can live-dump the data to my database to monitor remotely. Eventually this data should be good for spotting some trends for hatch rate improvement/incubator setting tweaking. There's a lot of things to look at with this information, but that will be a bit further down the line.
Anyway, just wanted to post an update.