I have a fairly new Scherzer picc. and the valves are getting a little sluggish. I have tried oiling them with the rotary oil but the trumpet didn't come with any instructions. I asked a friend of mine that plays french horn and he showed me where to oil on the french horn. I have been putting oil where ever I can get it into a moving part and a few drops in the slides. If this were a piston trumpet I would wash it. I was told that I shouldn't take the valves apart so I don't know what to do. How do you wash the horn? How do you oil the horn? I can't really see how the oil is getting onto the valves.