I did my gold-plating from Horn improvement, and they did a great job. of course, dont forget that if you do a gold-plating, you'd have to ahve the horn overhauled which means goldplating 1.2 grand?? and the overhaul 600-800 bucks for a really really good one.. think about that.. 2 thousand dollars for it. Is it worth it for you? I thoguht my horn played great and the sound got much richer and everyone who played it loved it ( it was a VI) you can find hornimprovemt info by searching it online!