I just purchased my 33 year holy grail, Hitachi trk 8190h on line. Of course the cassette deck doesn't work so the first thing I do is open her up and find the black goo! Since I have to wait on new belts from Modern Radio Bolton I decided to give it a bath...my family thinks I'm already crazy for buying an old radio, let alone putting the box in the sink of soapy water. It's gonna be awesome!