Ok…I’m confused about installing my mid-moe in an existing fireplace. Several people have said to run stovepipe the entire way up the chimney. Other places, (Fisher Installation guide [isn’t their mama bear basically a mid-moe] and Hearthstone site say it’s pretty much acceptable to run a pipe up until it enters the chimney. (hits terracotta or past the smoke chamber) Being this will be cabin use and used 8-10 weekends out of the year….ya think this is ok to do? I know the perfect world says to run pipe all the way to the top, but the perfect owner doesn’t have a few hundred $$ laying around to put into it. Chimney is solid, no interior cracks.