I just picked up an old 1983 "King" model Blaze King that has an oval cat and another member here was kind enough to give me a link to it's manual. Our current cheap wood stove from Lowes has a 6 inch stack that sits 11 inches from the wall while the King will have an 8" stack that will put it at 10" from the wall. The manual states that the King's stack needs to be at least 13" from the wall. My question is will the 10" clearance be enough since the wall behind our stove is flame retardant? If not, what other options do I have?