You've overcomplicated their diet, and need to simplify. Here we have a 20% protein, balanced all flock feed (Purina Flock Raiser) that is very fresh at my local feed stores, and I have oyster shell separately for the laying hens. You've added so many things to their daily ration, there's no way of knowing how unbalanced it might be! Point of lay pullets aren't adults yet and need a grower or all flock ration, with oyster shell on the side. Period. Then extras are extra, and 10% or less of their ration. Also, pay attention to the date on the feed bags, because some vitamins deteriorate ove a very short time. Then, size of coop, hiding places available, all important. Finally, having no experience with any of your hybrid layer types, I've found that the hybrid layers I've tried here have tended to be pretty bossy and willing to peck flockmates, more than the heritage breed types I now have. Try Sussex!!! I love my Speckled Sussex, such social birds! Mary