I have this nice Butz-Choquin Monarque... and it takes a 9mm filter - I have these 9mm Vauen Dr.Pearl Jr's Systemfilter plus filters.... when I bought the pipe, the store owner gave me a few... Still haven't started smoking it yet - but I have noticed that the filter rattles quite a bit and isn't snug in the stem/mouthpiece... is this normal... or is there a better filter? Thanks,
G
G