Day 19... I have several that have pipped internally from the larger eggs in my DIY cabinet incubator! The largest egg is still only at 7% weight loss and has the smallest air sac. I candled and drew the air sac so I can tell if it pips in the right spot. It's the one I have been most concerned about. When I candled, I didn't see movement in most of the eggs including that one. The good news is that after I put them back in the 'bator, she started rocking and rolling! I'm so happy to know she's still kickin' around in there! Keep those fingers crossed and prayers going!