stove is 6" (rear vented jotulF3, with t-snout. damper in the snout). I recently moved from an old farm house where i had installed 6" liner, approx 32'. I am now moving to a different old farmhouse, very similar also with approx 32' of existing liner but it is 8" so i will be buying an increaser - will i experience a difference in draft? At my last place, i discovered real quickly that the damper was needed (always full closed except on startup). What changes might i see now, with 8" liner instead of 6"?