Are fine cracks inside the kiln and on the ledge under the lid acceptable, or do they need to be filled or repaired in some way. I have a Paragon Fusion 14. It’s only about 4 months old, but it is hardly ever off. It’s my first kiln and although there are lots of discussions about fusing, there are not too many on kiln care. I’d love it if someone could let me know about this. Thanks a bunch in advance!