Looking for other's experiences. I shut down my Bull going on 25 mins ago. It is just now diminishing heavy smoke. The smoke was about twice what I see when running on LO. I checked the hopper that was about 1/4 full and there was no smoke coming from there. I haven't noticed this in the past, but I may not have been paying attention. Anyone have similar experience? Oh, and I had initially shut down from a 350 burn and noticed this, then started it up again and lowered the setting to LO and let it run for 20 mins or more before shutting down again.