Was just outside getting egg ready for some pizza cookin.
Had just lit the egg 10 or so minutes before, it was sitting at just under 300 and I was getting ready to adjust top/bottom to hold around there as I still need to do a few more things before I kick it up higher for pizzas----when I heard a WOOOSH and the temp gauge went from 300 to just under 500 in about 1 second.
Kinda weird--little worrysome at time.
Adjusted top/bottom to pull back to 300.
Others have this happen?