I had my second incubation underway. All was going well. Day 19, candled the eggs and 10 from 12 were doing well. I upped the humidity to 70% and on day 21 the eggs started cracking. 10 hours later I had my first chick. 20 hours later I had another chick, then things started to go terribly wrong. 3 chicks had pipped but were dying stuck to their shells. I upped the humidity to 80% but the remaining chicks were struggling to get out of their shells. I knew I shouldn't help but I didn't want to lose anymore, so I helped the remaining chicks out of their shell. They were all very weak, and over the last 48hrs they have died. I had 10 chicks that pipped and only 3 suvived. What did I do sooo wrong???