Thanks for the replies and info! I really appreciate any help I can get.

My incubator is a glass door cooler that I added heat to and gutted all the refrigerant stuff. I was using the fan in the unit to move air, but I think it may be a bit much. Going to pick up a small fan today from Radio Shack.

I too think that I skimped on the substrate so I made up another tub with the perlite about 2-3" deep and I am trying to get it up to temp before I move the eggs. I don't want to disturb anything too much. I am also going to pick up some press and seal and use that.

My temps are better this morning, but the thermostat had to be set at 92* to get to where it is now.