I am nearing my install completion, one question i have is about connecting my supervent stainless steel chimney to the duratech double wall stovepipe. The adapter that came with my supervent through the wall kit seems to not entirely fit into the double wall stovepipe. The male end of the adaptor goes into the stovepipe, but will not go the whole way in and leaves about a half inch gap from the outer edge of the dvl to the adaptor itself. but like i said, the crimped end of the adaptor fits tightly into the inner lining of the dvl. should I be concerned with this and does anyone else have this setup that could chime in? thanks