I had a really frightening hatch just ending today , and I am now thinking, is there anything I should change quickly, to help save most of the new eggs in the bator. I had 19 grey partridge eggs, that went in the hatcher, and now I have 12 chicks, out of which one has most probably slipped both tendons (to be culled sadly) and two have spraddle legs (taped them). 7 never pipped internally, while they were alive about 1,5 day before the first pips, today just dead in the egg (I think most were dead at time of first pips of other eggs), not absorbed anything etc. And the ones I have alive now, hatched so late ... on the evening of 26 th day (they are said to take 23-25 days, last year I had two great hatches on day 25 and 23, with my own built foam bator ). Some pipped 48 hours before hatching, some a little later, but still like 1,5 days before hatching, I think. By then I was so worried and helped some of them to zip, while I would generally not do that, but I need these birds. So, I am thinking, what was wrong, I have Genesis 1588, which I turned down a bit, (of course stooped me did not trust the factory settings) (all my 7 therm-s showed it to be a bit hotter at factory, although now seems it has hot and cold spots anyway), and I moved the eggs to my own built hatcher (worked great last year), which works by turning the light bulbs on and off. That was on day 19 (a bit early, I know, but I read first the days from day one - put the eggs in the bator like 6 in the morning of day one so counted at first this day also, and also somebody advised me to do it a bit earlier). All of them were alive then, although moving so very little at times, had to candle several times to see movement. So, after that I left the hatcher alone, and i think for about 12 hours it was sadly a bit cooler than it should have (about 98,6). I do wonder, if they were late and malformed because general low incub. temp, or because that 12 hours on lower temp in the hatcher .... or maybe because the incubator and hatcher work so differently (one keeps constant temp, other uses on-off lightbulbs)? They took soo long to zip after pips. Or maybe my breeding birds have some deficiency? My humidity was ok, I think, 55- 64% incubation and 75-85 hatching, worked great last year. All my thermometers show different readings, but the one that shows lowest showed "in" temp between 99.3-100, the same time of this themometers "out" with probe showed sometimes higher, so I was not worried about that 99.3. And at the same time at the other corner the same therm was showing 100.5 both in and out, so I did not see any room to turn the temp up. Other therm-s showed higher readings. Still afraid to turn it up . I really do worry and wonder, I have 15 pheasant and 32 partridge eggs in the bator now, pheasant is due 17.-19. june and the other eggs are on day 8. I do not want to kill half of them again and see malformed chicks. Please, anyone have any suggestions? Edited: - these 7 were dead in the egg, not air cell.