I’m considering switching from a vent free gas log system back to a wood stove. I have a flue brick chimney already and it’s in good shape. The inside dimension of the flue tile is 6.25” x 10.50”. The wood stove I’m considering is the Woodstock Fireview. Should I get a flue liner and if so, should it be insulated? My concern is that it could be a tight fit running it down that size of flue opening, especially if it’s insulated. Woodstock recommends a 6” liner for proper draft for their stoves.