I bought an estate for a great deal recently and I want to start smoking it soon. Unfortunately I can't get a pipe cleaner in, I tried running one through with both a soft bristle and firm bristle but neither worked. The pipe is a Bruken Selecta but the stem is a replacement, it holds a 6mm filter. Does anybody know of any ways to widen the bore or ways to clean stems without pipe cleaners? It's a lovely stem so I'd hate to need a replacement.