Hello, any help with this problem I have would be great. I am adjusting the intonation on a Jazz bass I have and have come across a problem. I have set the intonation and action on loads of instruments and have never had this on anything. The action and intonation is good on E A and D but G is buzzing like crazy when plucked in open. And its a semitone out all the way up the neck but open G is in tune???? The nut groove does seem a little low on G but thats all I can see. Any ideas??