I need to order some replacement hens. I have the red sex link now. They don't seem to be all they're cracked up to be. I get about 2/3 of the hens giving an egg a day. That's not so great for first year and second year hens, right? I feed them well too and they are on grass. So what is the best and most consistent layer? I can't afford to waste feed on hens that won't produce.