I've just noticed a sizable crack in my Large Egg down on the base and up one side about 8 inches. This Egg is about 4 years old and has been pampered. Very surprised at what I saw. Do the shells come with any type of a warranty? What can be done in this situation? Don't know if the crack is all the way through the ceramic. Was in the middle of a cook. As soon as it cools I'll pull the guts and see what it looks like from the inside.