I have acted on the advice that chicks will hatch past day 21, heard the cheeps and then they stop. Of course at this time I find chicky dead in the egg. This has happened now on three different (and my only hatches). Today's was 1 naturally hatched overnight, one was pipped this morning, one was cheeping and the other silent. This afternoon is about 4 hours past the 21 day mark and the pipper had zipped a little, but both eggs stopped rocking and I went to assist. Both active eggs from the morning had dead in shell chicks, and the inactive was cheeping, so I made a window, membranes looked ready, and I opened half the egg, little live chicken placed back in incubator.... Really... I seem to keep coming up dead chicks when I don't assist and each that I do lives.... Are others finding the wait on eggs gives dead chicks. The partially zipped one had been knocked upside down, possibly why dead? Final question for those of you with time and experience to reply is the little assisted chick has a beak that is skewed, top across bottom, I know I didn't do this as I was careful to pip at the air near, but not at the beak. Is this a comon deformity and can I help? I recently corrected a splay leg chick who looks perfect among the brood-brothers/sisters so I am keen to intervene. Expecting another hatch due Friday midday and I do not want to let the cheeps RIP. At what time on hatch day do you guys get moving to save the little guys?