Today I bought my first incubator for $25 at a yard sale and it was only used once. It is a Little Giant Still Air incubator. It also came with an egg turner. This is my first incubator that doesn't cluck so I've never used one before. The problem with the incubator is that one of the windows is gone. It's supposed to have two windows. Is there anything that I can use to cover that spot where it wouldn't lose humidity or temperature? Also how do you run it? As I said, it doesn't cluck.