I've made the mistake, many times, of panicking and helping them out of their shells because I've convinced myself that they've dried up inside and need my help. Inevitably I'm wrong, and the chick has pipped the shell but is still very much attached to the yolk etc, and the result is a very weak chick which needs a lot of help. I need to keep my itchy fingers to myself and accept that they either come out of their shells nice and strong, or die within. I think that they can spend a lot longer inside their shells after pipping than we think, and then emerge nice and healthy. What's the update? Good luck!