Does anyone have any experience with a supaflue liner or any other type of poured chimney liner? If so what did you pay and how tall was your chimney? I'm weighing the options of a stainless liner and a poured in liner. I understand the poured liner helps the structural integrity of the chimney and the supaflue comes with a lifetime warranty according to the chimney sweep. However I don't know exactly what is covered in that warranty. All ideas and suggestions are welcome. Thanks everyone.