You must have just had bad stock. I've had nice Ams as well as half Am EEs that lay blue or aqua eggs and have great production, 5-6 eggs a week even through Michigan winter. In fact, my EEs are laying better than my production reds right now, and the eggs are very easy to distinguish. Isn't there a Breda forum you could brag up about your girls? I came here to read about SOP Ams.
I only wanted to share that after the fiasco I had mixing dual-purpose production birds with our Silkies and Ameraucana that we finally found a decent LF breed that didn't terrorize the gentle Silkies and Ameraucana. It's been difficult finding good LF breeds to put together with Silkies and Ameraucana. We're hoping that if stress is an Ameraucana stressor that having a better LF breed added to the flock will improve it production-wise. Hey, we're trying anything we can to get our Amer on track again and sorry if I can't share that to everyone's satisfaction.