Hey guys, a while ago, I cleaned my Bach strad by soaking all the parts in water (like I was taught) for about 30 seconds then taking the parts out and drying them well. After I cleaned it, I noticed parts of the silver plating turning yellow. I cleaned the horn in a clean area. I didn't really understand why this happened. It's a while later, and I was wanting to clean my horn by using a snake but keeping clear of the silver's contact with water. Does this seem ok? And has anybody else see this problem before?