Hi everyone, I was giving my horn a bath on Friday and I wanted to make my slides look like new. But as much as I scrubbed I could not make them clean. I have a few blotches of stuff here and there on my 3rd, 1st, and main slides. I noticed they are all raw brass, so is there a cleaning agent that I can use to make them look new again? This is not a problem with movement, my 1st and 3rd are really fast and my main has some think slide grease so it is movable any way but will not move unless I do it. I was going to PM jiarby about this, I have seen him make slides like mine look brand new for a horn he sold. But I wanted everyones opinion. Am I just being to nice? Should I scrub with some dawn and a washcloth harder? Many thanks everyone!