With all the advances in trumpet materials and design, you would think someone would do something to improve our valve springs. There is one thing that you can do yourself to possibly improve the performance of your instrument. And the answer is inside your valve casings. Valves are made to go up and down when we perform and in most situations, they work well. Sometimes they stick and in most cases a good cleaning will solve that problem. But if a nice warm bath and cleaning has not improved your valve action you might consider changing your valve springs. After…