This trick came to me by way of the great cornet player and leader of the Ringling Bros. and Barnum & Bailey Circus, Mr. Merle Evans. While enjoying the very infrequent resting period during one of the circus performances, I asked Mr. Evans if he knew any tricks to improve strength and speed in working ones valves. The following information was gleaned from the conversation. This conversion needs only to be temporary for after a few days you will notice an improvement in both your speed and strength in your valve fingers. Materials required for conversion- three extra valve springs.…