Strange vibration on A string
I've recently been trying to lower the action on my P bass, while also trying to dial out a little fret buzz that was there.
I resorted to shimming the neck pocket and tightening the truss rod up and it's worked brilliantly.
However, the A string has now picked up a strange vibration which disappears when I press on the string beyond the nut. I've heard of weird things happening to the A on the nut, can anyone give me any advice? I'm thinking about fitting a bar to replace the string tree which covers the A D & G. Will this help?