Thanks for the response. I've read that acetone will soften and damage the FUD. After a scrub in lukewarm soapy water (including digging out the hole as much as I could with a toothpick), I gave it a 24 hour soak in Simple Green, and a second rinse & scrub in lukewarm soapy water. The outside seems absolutely clean, so I am going to try painting it, avoiding the hole, and just hope that there are no issues. I'll report back afterwards with how it went. I do appreciate the price! And again, a tremendous job on the details! Thanks.