I am on day 24 and had a few sinkers. So I began to dissect the first egg to see what went wrong. The chick is still alive breathing, (no peeping just body showing breaths of air). Now I have a half opened egg with the chick looking to be 2 days out from hatching laying in the incubator. I doubt it will make it but am keeping an eye on it until it either dies or finish hatch. I put the rest of the sinkers back into the incubator.