I have been using the Brinsea Octagon 40 for several years now. I have always used the wire bars and have had no trouble with them. I have the automatic turner so that isn't a worry. As far as rocking the eggs I think just moving them from one bottom to the next several times a day will suffice. I don't think a hen has a watch to time how often she adjusts the eggs. I love the incubator but use a hovabator as a hatcher for the last few days. The humidity is a guess in my Octagon but filling the water troughs and using the evaporation paper has always worked just fine. I have hatched countless eggs, chicken, duck, and goose in mine and always been happy that I made the purchase.
I also have 2 Suro incubators that control the temp and humidity but still like and trust my Octagon more.
I also have 2 Suro incubators that control the temp and humidity but still like and trust my Octagon more.