I have recently changed from using several Little Giants to a GQF 1502. Temp and humidity are great so far! I am on day 12 with my first batch of standard chicken eggs and they look right on schedule. I set another batch last Sunday so I haven't candled any of the 2nd batch yet. When I get to lock down how many plugs should I remove for air flow? The book said to leave it as is at this point but I have searched the internet and find conflicting advice. I am really excited and looking forward to my first hatch in a GQF. The eggs look so happy when I candle them and keeping everything controlled has been so easy, I don't want to mess up in the end. Any Advice???