I can't believe I need to ask this question, as I've been smoking pipes for 40 years, but here goes. I've never had a pipe with a filter. But I just bought my first filtered pipe - a nice Savinelli. I bought it from Smokingpipes.com, and their website indicates that this pipe (a Morino Bent Billiard) takes a 6 mm filter, which I purchased along with the pipe. The problem is that the filter does not seem to fit! I don't get it - I just don't see how the thing is suppossed to fit. Any help for the dimwit here would be really appreciated.