Arrrrgggghhhh
I just had to look at the un-hatched eggs again. The one that has not moved for a couple of days got candled again, definitely no movement there, so I removed it and decided to eggtopsy it, see if I could get a clue about the remaining egg before that possibly dies in shell too.
Egg No1 had a small hole put in the air cell, look listen feel...nothing. Opened the hole big enough to see in, the air cell looked a little dry, opened it some more and I could see what looked like a beak, no movement.
Opened it some more and found it was a toe, not a beak. Gently opened some more, no blood what so ever, all veins had receded, found the head way down in the pointy end. No yolk sack left in the shell, chick fully formed but seriously malpositioned.
This prompted me to look at Egg No.5 again, with the side mounted aircell (not the worst but enough to give me concern)
It was chirping and had pipped into the air cell, but not externally. I gave an artificial pip, same process as before, chick was chirping away, no blood from the air cell area. Could see what looked like a beak, but may also be a foot so I went a bit further. At this point the chick was pushing. I could see it was a beak but it was trying to push out the big end.
I allowed it room to push free from the membrane and a squirmy fully formed chick flopped into my warm moist palm. The shell was clean, no yolk and very little blood.
I laid the chick back in the incubator, humidity is back up to 75%, temp is steady.
The first chick is more mobile now, but not yet dry, the second chick is alive, but breathing heavy. I am 2 hours late for work! I know it was not right to interfere, but something was screaming at me that if I left it, it too would die in the shell trying to break free.
If it has the will and energy to fight on, it can, if it was destined to die I will be sad when I return home, but it was just not meant to be.