I need to get you folks view on something. I am ready to push the big insert back into my masonary fireplace after liner install and extensive maintenance. For the liner installs I purchased a large quantity of Roxul mineral wool insulation. After chimney stuffing etc. I have enough left to stuff the back and sides of the fireplace as well as lay batts on top of the insert when I push it back to cut down on heat loss through the masonary. Any gotchas in this plan that I am not thinking of? The only thing I can think of that might be a problem is that the housing around the stove isn't near the gauge of the fire box. But convection is so good with the stove even without the blowers on that I think air flow will keep the housing from getting too hot. Especially since my days of running if like a blast furnace are over.