For Berlin and Keepaeyeonit, no luck on the self aligning flue liners, Superior Clay in Columbus, Ohio says nobody's stocking them as there isn't any demand. As far as 8" regular round liners go, no one has a chimney block they will fit in, (10" outside diameter). Called Stony Run Supply as suggested but those block are for a "ChimTek" type chimney system. All that said, I'm going with 8"x8" flue liner and 16"x16" chimney block. Thanks again for the input, much appreciated.