I have a 12 Egg IM Incubator. I have had it for a while now. I have used it two times so far. First time it was used was after a few days in my homemade incubator(a wooden box with a light). Only one chicken hatched. All the rest were yolk. Second time I used it was with Silkie Eggs. None hatched and they were all still yolk, no formation at all. The temperature was always around 101-103 degrees fahrenheit. Here's a picture of my Incubator: The white thing in the middle is a piece of foam boxing. I don't know whether it is faulty or it is just because of its design but the heat only stays to one side. I placed the foam there to keep the heat in that area. (I put sticks along the inside to hold the eggs in place) Can anyone tell me what I am doing wrong or give me any advice on what I should do?