I'm hatching 33 mixed eggs for a class at my school. Every time we candled I thought it looked like they were behind. I'm using the little giant incubator- which I'm not happy with. For the second year in a row we've had problems keeping a specific temp. I know, I know, I get what I pay for. Anyway, I had 3 of the chicks hatch today and all 3 were still attached to the egg and had distended bellies. Is it possible for chicks to get out prematurely? The are weak, but are peeping and moving around a bit . I gave them some electrolyte solution mixed with some food. I have no other chicks out but there are at least 2 more pipping. Does this have something to do with the wonky temps? Or something else I could fix?