hi all, have a dual stack kitteredge with a Blodgett 1000 on the bottom. The Blodgett has a big crack on one of the stones, while the top oven has a small find crack on one stone. I do not now If these are oem stones or replacements, and with recent searches on here mentioning asbestos in Blodgetts I’m a little worried. We use pans, and we do y use s grill scraper at all, let any messiness be cooked through if it falls on the stone. Also, our pizza shovel is wood and not metal. Any insight?