As long as you have your hudmidity up you are fine. I always roll mine back over if they've been knocked around and pipped eggs land upside down. I also remove my hatchers and egg shells and if I feel I must, assist. All during hatch. They key is to have your humidity up and make sure it recovers quickly when you are done. Now, if you mark your air cells at lockdown, this will give you an idea of where the chick "should" pip and you have that side of the egg facing up. Then when they pip you can see them- well until one hatches and rolls it over...lol I hope you find lots of pippers and progress!! Good luck.