I've been playing bass for about 3 months now, and I have a problem that's been bothering me more and more since it started. I have a Dean E09 Edge bass, and whenever I pluck the strings, there is a weird rattling noise that seems to be coming from the headstock. I've tried tightening screws, but none were loose, so that didn't help. Perhaps I need to replace the strings? Thanks for your help.