So, I'm think of having a stainless liner installed in my chimney for my stove...but got to thinking today. My stove needs at least a 6" flu, and my chimney is a tile lined 7 X 11" flu. Usually stainless liners are insulated with a wrap...but in my case would it fit down there? Would they just skip the insulation wrap and would that be ok since there is a tile liner? I'm just confused in how they'd handle this sort of thing...although I would think it's kinda common?