Some time in every trumpet players life they will run into valves which do not function as they should. They may go down but at times will not come back up. Here is a solution to the problem which I have tried and most recently been reminded. I’m starting to play a new show in Branson and I decided last week to switch to a different trumpet than I have been currently using. For our Branson Trumpet Ensemble concerts, I prefer my Bobby Shew horn but decided to get a little more edge for the new show and brought out…