For the dodger's and flasher's and other metal that is supposed to shine but isn't shining, I use the same thing the music store sold me for cleaning my silver trumpet so many years ago, Flitz metal polish. Supposedly, it takes the "tarnish" off without removing as much of the metal as other products do. If they're really bad though, I go to the buffing wheel and apply a little jeweller's rouge or rotten stone and try not to burn through the finish.