I got an Ibanez Acoustic bass recently, but I played it in an area that was a bit on the damp side. Now the 12th fret buzzes, and I am not sure what to do about it. The bridge is not adjustable, and that is what I would have done to it if the electric were buzzng. I can put it in the hard case with a humidifier a few days and it goes away, but slowly creeps back in. Any advice?