8.There are tiny cracks in the glaze on my Egg Kamado. Is this normal?

Yes, this is normal. If you have a Egg Kamado which has a glaze on it, this "crazing" does not harm and is no reason to be concerned. That's normal for Egg Kamado item, it happens to all Egg Kamado in the market, people call it "crazing". It caused by the different expansion rate between "glaze" and "clay", it happens once Egg Kamado come out of the kiln, and look obvious after dust fall on it.