I am planning on putting a 4x8 short tent in my basement (short because I have , >72in clearance). I would like to do more work with CO2 and I was leaning towards a burner because the room is already has a natural gas line in it. My concern is that both Titan and Autopilot burners ask for 20" stand off from all surfaces. Which would reduce my growing area more than I would like. I am interested to know if that 20" stand off is really that important or if it will melt the tent if I push it?