I have had my new B1 for about 6 months now and the 2nd valve espescially, and the 3rd valve a little bit, are really noisy. When they come up you can hear a loud metal click every time like the felt isn't having an effect. I have checked inside and they look identical to my first valve which is quiet and I have oiled the guides etc but no difference. They work perfectly and the horn plays beautifully and the valves are fast and quick but they are much noisier than my Yamaha trumpet and Besson cornet. Does anyone know what is causing this? Has anyone experienced this problem before?...and is it anything to worry about? I am a bit surprised as everyone raves about Schilke valves being the best in the business. I am using Al Cass oil if that helps and have washed/cleaned them with my Brass Saver as well but to no avail.