I have a problem with my ernie ball 5 string Sting-ray bass. I bought it last February and its been fine until recently, I've noticed the strings are becoming very close to the fretbord and are usually giving off a ringing/buzzing sound when strumed. I have kept it in good condition and usually left it in the case or on a stand. I suspect that it could be that the neck is warped (although it doesn't look like it at first glance though i am not 100% sure), or maybe the strings are in need of change. I would like to know if anyone else has had this problem and what they did to fix it, and/or if anyone has any suggestions on what the problem is. Help would be greatly appreciated.