So I ordered up some 1" thick insulation for my baffle (Regency R16). While putting it in I noticed that the insulation fit tight up against what I think is called the "flame spreader" or something ( a piece of steel on the top front side of flue outlet that is about an inch thick). Is that right? Gases can get around both sides and back of flue then up and out still but wondering if there is supposed to be space between spreader and insulation.. Thinking maybe original wool was 1/2" giving some space there. Reason I ask is I'm getting way more smoke than I was when I reload.