I have a question regarding the clearance for this stove. I am new to wood stoves so any advice is much appreciated. The manual says minimum clearance with protected surface is 12". But with the 1" air space and ceramic spacers I can cut that by 2/3 leaving me with 4". My opening where I'm wanting to put my stove is 42" wide and the stove is 25" wide. So I will have 8.5" of clearance to combustibles on each side which according to the manual is more than enough. Is this correct or I missing something? This is my first install and thanks to the people on this site I have removed my old fire box which was extremely dangerous and I am now starting from scratch.