Christine,
Nobody else has contacted me this year about this problem. Make sure when you move them out of the incubator that the chick are fully dried off. If not, they might be getting chilled in the brooder box. Other than that you might make sure they know where the feed and water are in the brooder box. Dip their beak in the water, then the feed and back in the water. That might help. I hope this helps somewhat.