I had several chicks start to hatch yesterday, and as the new chicks started stumbling around the incubator they knocked the still-hatching eggs around, causing them to roll over. One particular egg ended up with the new hole in the shell flat on the floor of the incubator. Was I wrong to turn them back to the position they had been in before getting knocked about? Now three of them appear to have stopped the hatching process, even though they had started! Are they dead?!