Yep it was day 60 I had as the estimated day, Then i read the info on day 63 and it said (from memory) average 58 latest 65, always pip on day 60 which increased survival (to that effect).
I mulled it over and decided i better cut them on those facts, given the experience of the author. As i figured that I was possibly already up to 5 days over...
Its all up to them now, I have them set at 30 -31 It looks like the albumen forms a little bit of a seal, I closed the cuts as best i could last night and haven't or won't be touching them again until i know one way or the other. Apart from the cutting I only looked in 4 eggs at the time, 2 looked good, 2 looked under developed. Surprisingly, The major veins that you see when you candle, on at least one egg came free of the shell and remained intact while the cut shell lifted off the membrane that holds the veins. And i opened the one to take the photo last night when putting back in.
I don't like opening egg containers and playing with them, and I never weigh eggs because i don't like to interact with them at all, much preferring for them to just do what they do on their own.
Today is day 65 so as long as I haven't killed them by spiking the temps for a couple of hours it may not be as bad as i first thought. If they do die now I would say it was the increase in temps that knocked them.
Hopefully they have inherited their fathers aggressive stance on life...