This morning I received a package of Old Codger Burleys so I had a Hardcastle Zulu full of Walnut. At first I tried it in a new MM American Patriot. Tasted like I was smoking air and I couldn't keep it lit. Then I realized the problem wasn't the tobacco. That cob was leaking like a sieve where the shank goes into the bowl. I guess I will get some Elmer's wood glue and try to patch it. It went much better with the Hardcastle.