Dip staining a bowl or covering up the stain in the bowel with a carbon coating. This is what I found in my new rossi when investigating a bad taste. Carbon coating started rubbing off with the first rub of a swab with a little bit of alcohol. Silly Silly Silly. Its a good thing I like the pipe or I would be mad. :
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![Puffy puffy puffy](/forums/styles/default/xenforo/smilies/old_pm_smilies/puffy.gif)