I just bought a new Jupiter YCR-1220 cornet at Chuck Levin's tonight....having a lot of fun with it, sounds great! This is my first horn with a trigger (has first slide trigger), so I'm a little curious about it: What maintenance does a trigger need? Should it be oiled often, maybe with a couple drops of valve oil? Next question: is there a "correct" way to hold the first slide trigger? I naturally have my left thumb on the trigger, which is taking some getting used to, since I use my thumb to balance the horn in my hand, but now I cant keep my thumb tight on the valve casing anymore. A trumpeter from the community band told me you are supposed to hold the trigger with your right thumb, which is totally akward for me. I cannot do that, I just wondered if there is a "correct" way?