I've had the stove installed and running for 4 years now, and I figure its probably about time to finish the trim. The chimney goes straight up through to a chase on the 2nd floor. We have the required sheet metal fireblocking and its caulked all the way around. Based on 211, I can't use wood to close the gap, so I'm looking for suggestions on how and I can trim this out and have it look half way decent.