If this belongs somewhere else, sorry. It's an amp so I figured..... So I got an old V4 (story here http://www.talkbass.com/forum/f15/new-old-amp-day-ampeg-v4-question-942076/) The tolex has a really thin layer of grease on it. It almost seems as though the amp was stored beside the fryer at a restaurant for a year or so. It's just a bit gooey. So what would I use to get that clean without getting it too wet? Thanks.