Probably user error, but has anyone else experience the vent corner of the smoker being very much hotter than the rest? I made a few batches of jerky this week (7 pounds of meat worth). On the first batch, the back right corner got burned on all 4 racks - About 3-4 inches worth of jerky burned while the rest was fine. Perhaps I had the vent open too far and the heat turned up too high? I don't remember what I set the unit for as far as temperature, but I'm pretty sure the vent was wide open. Subsequent batches I was able to save by not putting meat on that corner, but I'm still wondering what I did wrong. Thoughts? Thanks!