Hey all, new to long smokes, newly retired and looking for a new hobby, I think I found one. I just bought a Horizon 16" Classic, wow what a tank. Ive done a couple of smokes over the last week and I've noticed I'm loosing smoke and most likely heat from the rear food chamber lid (back along the hinges). There seem to be a 1/8 - 3/16 gap back there, I haven't seen anything on line to address this issue, if in face it is an issue. The people at Horizon have been great, they say a little billowing smoke is normal from all openings. Any one own one of these tanks? Maybe shed some light on my gaps