I have 9 eggs that got to the lockdown and died. I candled them before they went to lockdown and I would say 5 or 6 were for sure alive. 2 of the 11 hatched. One hatched on day 21 and one on day 22. So I have been reading that you are supposed to open the duds and see what when wrong. So, as I contemplate breaking open the eggs, I have no idea what I should be looking for. Any instructions or pictures you could refer me to would he great! Thx!