I'm glad to hear you'll be trying again too Bee.
However, one thing that I cannot and will never recommend is assisting a chick out of the shell. I have done it in the past, and like NVcattle stated, each of them in turn has died, mine weren't from neurological disorders but rather because they did not have to struggle to get out of the egg, they had very weak legs and never could walk correctly. The process of struggling and turning inside the egg and working their little hearts out just to get out of that coffin is what gives them the best start, it makes them strong. It has taken me a lot of years to become this calloused and I think it is for the benefit of the birds under my care. This is not to say I don't monitor humidity and either increase or decrease as the need arises. If I have a chick pip but is slow in zipping, I will mist the eggs with warm water to increase humidity directly. Or if you can tell the egg is getting too dry, you can wrap it in a warm, wet paper towel, being sure to leave the pipped area uncovered.
I would, however, recommend you mark the air cell on the day you set them. It will give you a beginning point to measure and compare from. Then mark again at days 7, 14 and 18 (I believe is what is shown on the air cell development charts). It will help you monitor progress.
I know you didn't ask for my advice but I wanted to do what I can to help you anyway. It's only worth about 2 cents so...
However, one thing that I cannot and will never recommend is assisting a chick out of the shell. I have done it in the past, and like NVcattle stated, each of them in turn has died, mine weren't from neurological disorders but rather because they did not have to struggle to get out of the egg, they had very weak legs and never could walk correctly. The process of struggling and turning inside the egg and working their little hearts out just to get out of that coffin is what gives them the best start, it makes them strong. It has taken me a lot of years to become this calloused and I think it is for the benefit of the birds under my care. This is not to say I don't monitor humidity and either increase or decrease as the need arises. If I have a chick pip but is slow in zipping, I will mist the eggs with warm water to increase humidity directly. Or if you can tell the egg is getting too dry, you can wrap it in a warm, wet paper towel, being sure to leave the pipped area uncovered.
I would, however, recommend you mark the air cell on the day you set them. It will give you a beginning point to measure and compare from. Then mark again at days 7, 14 and 18 (I believe is what is shown on the air cell development charts). It will help you monitor progress.
I know you didn't ask for my advice but I wanted to do what I can to help you anyway. It's only worth about 2 cents so...