Been burning under 550f stovetop temp for a month with my new fireview(love this stove). Pulled the stackpipe today to inspect for creosote...minimal at best, then I noticed a 1/16" wide crack and other small 1/4" long cracks near it on back which all follow the grain and appear to just be external. Just wrote Woodstock an email waiting for a reply. Photo is to big for this site check it out here:
http://www.flickr.com/photos/70854997@N06/6630235585/in/photostream
http://www.flickr.com/photos/70854997@N06/6630235585/in/photostream