ok... my cousin gave my son a bunch of barnyard mix chicken eggs to hatch out. well i have 2 buckets full and only have 1 lg incubator. i am going to donate some to a local school for the first grade to hatch out. i have somehow misplaced the 2 plastic windows on the top of the bator so i have used 1 piece of glass shelf to cover the area. problem is that i cannot get the humidity to rise above 30 to set my eggs. any sugestions?