Just wondering if you guys have an opinion on this because my friend did this and his performance of his wood insert increased dramatically using less wood. He wrapped his insert top, back and sides with 1 inch Kaewool and left a tiny gap at the corners to let the insert breath whatever that means and he said his insert runs amazing now, he gets the insert up to temps now using less than half the wood and it stays hotter way linger now. I think I am going to do this in the spring for next year, any thought or has anyone done this before?