I'm trying to take apart the control unit on my Logitech z560 speakers, but I don't know how. When I adjust the volume, the speakers crackle. I figure it's probably just the potentiometer so I'm going to try to replace it. I figured that there would just be screws underneath the feet on the side, but when I took one off, there wasn't anything underneath it. If anyone knows how to take it apart, please give me a nudge in the right direction before I go prying on things.