I think you’re right, that was my suspicion for sure. The piece was pretty big and the spots were in the middle so today I cut it into two pieces. I was hoping that refiring them cut that way would let the spots vent out of the piece. It worked well…still small spots but I will fire them again and I think they’ll be gone. Going to try the hairspray and make sure it can burn away and not be trapped inside.. Thanks for responding!