This is my first time using a bator, as I'm all out of broodies. My guinea eggs started piping yesterday morning. Out of 31 I now have 11 hatched, 9, or so pipped, or zipped and the rest hasn't even pipped yet. They were candled when I took the out of the turner and all had keats. I can hear tapping in one, or two of the not pipped ones. How long does it usually take for al of them to hatch? Is my humidity off causing them to stagger so much?