I can hear a buzzin'

[psy]

On my latest Mockingbird (NJ Classic Series) I'm getting a a slight buzzing/dampened sound on the D string (I tune to B, so that's the 4th string (where the G normally is)) when played open.  

I've tried raising the action, but it doesn't sound any different.  Do you think, perhaps, the string is too low in the nut?  If so, what kind of nuts are a good replacement.

Cheers,

Simon

PS I've attached a picture of the nut (this is from when it was still in E when I first got it.  It now has 4 wound & 2 plain strings)

[MentalTan]

Was there buzzing before you started using a wound g string( :lol:  sounded funny)?
If there wasn't any buzzing when the g string was plain then that would tell me that you putting the wound g string on caused the problem. Either because the tension on the neck caused the neck to bow a little(for this you'd have to check your truss rod), or like you said the string may be too low in the nut. Try checking you bridge to make sure it's seated correctly, and look at the side profile of your neck to see if the string is sitting a little bit lower than the others.
If this has been a constant problem you may have a high fret somewhere.
If you can't figure it out take it to a professional tech/luthier.
edit: I'm not a pro, and I'm not super expirienced so wait for someone more expirienced to prove me wrong, or right.

[Ratrod]

I think this is a common problem with these guitars. I've seen this myself and the pic seems to confirm it. The G-string slot in the nut is cut too deep.

There's no need to buy a new nut or anything, it's easily fixed. But before you start, check the trussrod and all the other things mentioned in the post before mine.

Here we go. You can fill up a too deep slot. You'll need to grind down a piece of nut material with a file. If you don't have any of that around, you could use a dice. Grind it down with a file and catch the powder on a small plate. Scoop up the powder with some fine folded paper. Cigarette paper is ideal. Pour a drop of super glue in the nut slot and gently pour on the powder and press it down with some paper. Repeat if nescesary. Let it dry for a few minutes the put the string on it and tighten it up a bit to make the mix of glue and powder dense. After 10 minutes or so you can now cut a new slot. If you don't have a  nut file you can use a nail file. Just be sure you don't file into the original nut material.

[psy]

Cool, thanks for the quick replies.  I'll have a closer look tonight (then buy myself some superglue & a nail file).

[Philly Q]

If you don't have any of that around, you could use a dice.

Now that's a neat little tip.  I'll remember that.  :D