Put 3 goose eggs (purchased) in our Bator Monday night. Two of three were really dirty but I just wiped them with a warm damp paper towel. None of the dirt or stains came off - didn't want to wash them so put them in the Bator. Two days later one of the eggs has what appears to be pimples on the shell. Thought it was moisture but they are hard granules. Does anyone know what this is? I have humidity at 55 - 60% and spray the eggs with room temp water as the seller advised about 3 times a day when I turn them.