2 of my pullets have been laying for a few weeks now, the only problem is the eggs have a hard shell and once you get it cracked the membrane is real hard to get through. DW would rather have store eggs than deal with these. The girls free range and have grower finisher pellets in their feeder. Their favorite treat is cheese, they get a bit every few days. Anyone know what makes the membrane real tough? I would like to finish off the bag of grower before buying layer pellets.