I'm new to breeding.... I had an EE Rooster and Rhode island red hen, egg in the incubator.... The chick was (25 days) fully developed you seen the beak, legs, etc..... Will the oaster shells make it harder for the chick out? Or what could it be to cause these little guys not to make it out of the shell? I have the incubator on a filing cabinet. Could me opening and causing a little shaking cause them to not hatch or what? Any advice will help..... I can send pictures of the incubator if need be.