have you thought about using a 'starter' or starter/grower with the layer feed and BOSS (safflower-just a small amount of it daily)(soaked oats) (boil liver and crumble it and add soup and crumbled liver to starter-maybe once a weekor more often if no problem) make up like as doughy biscuits, these things have really helped mine.
If this is to much i apologize .
All the other stuff you are doing and using sounds good .
If this is to much i apologize .
All the other stuff you are doing and using sounds good .
Mostly grower, although they have access to some layer feed as well. I have both out because I have mixed layers/non-layers. Some scratch and BOSS. Some scraps from the house, mostly bread crusts that my kids don't eat... Lots of FRESH water.
ETA: I don't think it's their diet because all the others are doing well and they seem fine otherwise...