I've tested them all this morning and got no movement from any of them. It's been suggested to me keep them until day 28 so I'll do so, but they are just my eggs from the backyard so it's not a big deal if they end up not workin out this time. As it is my one non dud welsummer started laying the day we started incubating this batch so now I'll get a chance to fire a few of them up. My broody is taking a few hostage atm. As for opening them up and examining them, I am already going to have to open up and examine my agressive rooster real soon so I'll baby steps it for the time being lol. That one I feel I am not quite ready for. I did think about it but for the time being I still really like eating their eggs. xD