Ordered the Casa W80 a year ago, noticed that stove pipe (6") did not fit into flue hole; Forno Bravo was aware of it ("Just crimp the pipe rim"). Finally getting around to installing it: crimping was not enough (and difficult without breaking the 'neck'), had to grind out the flue hole in the concrete cast ! With all the emphasis on fire safety (especially for indoor use), I am amazed the company is selling this "misfit", with potential for smoke leak, etc....