I recently purchased this bass. It plays incredibly well except for one problem, it crackles a little bit when I slide up or down the neck. It doesn't do it when I press a fret, only on the slide. It almost sounds like static electricity but it doesn't go away. I don't know if it's a grounding issue or what. I'm looking for a quick answer because otherwise I'll send it back soon and get a replacement within the next two weeks. Any help would be appreciated. Thanks.