QJ, if I may recommend, when your LG is available, I would move your sebbies to that bator. One thing I am finding is that the humidity level really needs to be lower than for ducks, especially after the first 2 weeks of incubating. Also, it is easier to cool/mist when they are by themselves.
Ok, I'm glad you said that. I'm thinking my air cells are looking about 2 or 3 days too small.