Well Here's some pictures of where I had put the insulation.... I've removed it now, but sadly don't notice much of a difference. There is some air being 'pulled' in under the stove, and there does seem to be a little coming out of the left side now, but not much. So far - it doesn't seem to be making much of a difference, we'll see what happens as the stove acclimates itself to the change. What I really want to know is, with today's technology - why has someone not developed a simple temperature controlled fan speed controller. Think about it - it seems like it would be quite simple - a thermocouple would provide the input to a simple fan speed controller - as the fire box heated up - the blower would increase speed to put out maximum heat to the room - (this could be in the auto position) then, as the fire burned down -- the temperature in the firebox would reduce - and the fan speed would reduce accordingly. I'm sure I'm over simplifying this - but honestly - with the price of these stoves and all the other advances - extended burn technology - air wash across the glass doors to keep them clean (something the summit is great at) etc etc.