I started helping the little BCM that was getting nowhere. I've pulled the shell away about halfway around the egg (like a zip) and the membrane underneath is just soooo thick and completely dry and white. I'm dampening it periodically, chipping away tiny bits more shell, and I have the whole egg sitting atop a damp paper towel in the bator in between surgery attempts. I don't want to go too fast -- I haven't seen any blood but I also don't want to get ahead of myself or her, so I figure if it takes a few hours it's better than going too rapidly and pulling her out before she's ready.
Baby cheeps frantically whenever I pick up the egg and talk to it, so I think she wants out!!
I also unplugged the 'bator fan. It really seemed like it was speeding up the drying process (it's a pretty strong fan) so I'm going to watch the temp and humidity carefully -- I can always plug it back in if something spikes or plunges suddenly, but I really think it's making things too dry in there. I've got two others that have pipped and 14 more that haven't done anything yet -- I need to do everything I can to maximize success at this point.
This is by far my most nerve-wracking, nail-biting hatch yet. Don't let anybody tell you newbies that it gets easier -- just when you think you have it all figured out, everything goes wonky and you're back to square one.