Someone correct me if I'm wrong, but if you're incubating the eggs upright like that, I think rotating them entails tilting the entire carton up at either end; just spinning them in place won't do anything. When they're laying horizontally you'd rotate them by rolling them along so the air cell...
When you turn them in the carton, are you just rotating them? Or tilting each end of the carton up and down? Maybe you should try laying them on their sides.