I have a Brinsea 20 Eco and have had a few hatches with mixed results. They have always been shipped eggs so far. My last hatch I had 11 eggs go into lockdown. 8 hatched very late day 24. 1 died right at pip and two did not even pip. I ended up helping four of the eggs hatch they piped and zipped halfway. they were halfway zipped for 24 hours. 1 chick had a crooked neck and 1 had spraddle leg. I upped my temp for my next hatch just slightly. I have a hard time reading the thermometer, but it appears to be just under a hundred degrees. So I set my eggs (shipped eggs and a few eggs from my own birds) At 12:30 PM on March 3rd. if I count that as day 1 that puts me at day 22. Nothing is happening and I made a big mistake. I took out an egg and it felt to heavy to me. I decided to do an autopsy and the chick was still alive. I killed the chick because I was not patient enough. The chick had not absorbed it's yolk sack yet. What is going on? This was 1 of the eggs from my own birds not shipped. Why are they so late? I guess I will leave the other eggs for longer, but is there something I should do? I put in another thermometer and the temp read 99.5. So why are they so late? It is so upsetting I can not believe I killed my chick like that. Just looking for any advice.