I can honestly say it had been years and years since I’d done more than a light toasting of any of my clay work. I had gotten used to my old oven and learned to carefully plan in the fact that it cooked around 30F cooler than what the dial said.
Recently I moved and switched ovens. This one bakes much, much hotter than the temperature on the dial but not reliably so. It seems to vary between 25 and 100F from the temperature on the dial which has made for some tense moments the last few trays of beads culminating in one the other day which resulted in my first seriously burned tray of clay anything.
So until we figure out what the issue is, I’m watching all my baking like a hawk.