I just bought a Shure Sm48 on ebay. I have no idea where it has been, and since it will be close to my mouth an touching my lips I would liek to clean it. Do I take the grille off? Can the grille even come off fro an Sm48? What do I clena it with? ect. Thank you. Also it has some rusty stuff on it and stuff that kind of looks like boogers on it. How do I remove all this grose stuff without damaging the mic? Thanks for the help. I DON'T KNOW WHAT FORUM THIS SHOULD BE IN, SO I JUST PUT IT IN HERE BEING THAT IT IS BUDGET GEAR ($30) SO IF YOU KNWO WHAT FORUM IT SHOULD BE IN PLEASE TELL ME.