I've been hatching chicks in my incubator. Occasionally the dang incubator suddenly gets hot or cools off -- not exactly a precise machine. Well, several -- maybe one in 20 -- chicks that hatched were what I've come to call "Lumbering Lumps." They're pancaked a bit (flatter rather than round like a ball) and they lumber from side to side -- sort of like a scoot. These just never make it. Does anyone know if it's the variable temperature that's causing this? or something else? It's like chicks with Down syndrome. They're really beautiful, but they always die. Very sad.