Dear Dave:
Try to poultice it out with a potent paint stripper based on Methylene Chloride that's available at any paint store. Do follow all precautionary directions printed on the container of the product: that stuff is nasty!
May I ask you now to please read and e-sign our Statement of Purpose at: http://www.marblecleaning.org/purpose.htm?
Ciao and good luck,
Maurizio Bertoli
Article ID: 1417
Created On: Fri, May 9, 2008 at 12:21 AM
Last Updated On: Fri, May 9, 2008 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=1417