Hi, I have 14 pekin/Rouen/khaki Campbell eggs in a hovabator. The temp is 99.5-100 and says 60% humidity. Two of my eggs are cracking but I haven't dropped them and I have been extremely gentle, what's going on? This happened to other eggs I've had in here including quail eggs. Its like the shell is being suctioned inwards. I put 3 thermometers in there to check temp spikes and I check it every couple hours to hand turn.