I have an old Bach 37 that I've had since I started college in 2005. The silver is wearing in the high trafffic locations and there is some pitting of the silver around the valve casing. The Question is do I get it re-silverplated or should I think of getting a new horn? The bach is a so-so instrument for me, but I want some change. I know that with the bach I could do heavy caps and a new lead pipe for cheaper than a new horn. If you were in my shoes what would you do?