Hello. I found a trumpet trimming service on netinstruments.com under the trumpet section. It says it will gold plate the inside of the bell, slides, and caps water keys etc. for $150, the guys name is David Williams in Tallahasee Florida, is this a scam? Does anyone have expirence with this music store? I wanna do this bcause this is cheap but are there any other services that are cheaper that do the same? thanks!