I guess this is too late, but if it can't break out, usually there is something wrong with it. I've had chicks that couldn't hatch right, and I 'helped' them out of their shells, but many ended up having not absorbed the egg yolk completely or something which then made me regret trying to help them. Sometimes the incubator temperature isn't right, or something else goes wrong, (bad breeder diet, or too much inbreeding) but it usually doesn't pay to help them out of the egg. Nature can be brutal.....