I was wondering if anyone out there has ever engraved already browned hardware on a piece. I was thinking about sending a fowler to a jeweler to have the brass hardware engraved as I think they might do a better job than the maker. It got me thinking about having the lock engraved as well. Would I be able to touch up the channels left afterwards, or would the smoothing of the burls after engraving require the entire lock to be completely taken down and re-browned? Any advice would be appreciated.