Do you have an overhead fan to circulate your heat in your incubator? Just wondering if that might be a problem in mine. Since my heat comes from the top of the incubator.I think that eggs are designed to create the environment that they need from beginning to end. I think us humans tend to take things and overthink them when we really don't have to. We are a species that overthinks everything. A chicken just sits on the egg and the egg does its own thing, the only thing it can't do is provide itself heat.