I have hatched three chicks yesterday on day 21. I am using a Brinsea mini Adv incubator. I am trying to decide if I should help the fourth unhatched chick along. I candled it this morning. It has piped internally and is moving, but not externally and I cannot hear it. It is now Day 22. I read the article on assisting with hatching, but she said only to help if you hear something, I do not. The other three chicks are happily moving around in the brooder. Thoughts?