I recently opened my Colecovision, the RF sheilding was pretty rusty and the main circuit board also shows areas of rust, dirt etc. Here is the thing, I am no electronics wiz, is it recommended I try to clean it up, remove the rust etc? I mean it works perfect, even the output is clearer with less interference then my "clean" Colecovision lol! Would leaving as it s likely be bad in the long run? Will it continue to rust? What do you guys recommend? THANKS!