I have a PB Pro 820 and so far it works great. But, on 2 separate cooks the following happened: I was smoking a pork butt or brisket and started out using the smoke setting. I don’t have Bluetooth to monitor temps, and I checked the progress after an hour or so and the temp was showing under 180 or so and no smoke. I took meat off grates, took out grates, etc. and found that the fire had gone out and burn pot was overflowing with pellets. Apparently there’s no auto shut off if temp gets too low. I was able to get the fire burning again and finished the cooks but kept the thermostat at 225 and above for the rest of the time. So - is the smoke setting only meant to be used briefly at the start of a cook, or do I need to adjust the “p” setting when using the smoke setting? Thoughts or suggestions?