[HG] Unwanted harmonic

[Matthew Williams]

I'm still having a frustrating problem with my chanter string on my C-G 
gurdy.  It tends to sound an octave too high when I play the fifth note (D).
Following helpful replies to an earlier post, I've tried (a) changing the 
cotton, (b) adjusting the shimming, (c) changing the string, (d) raising the 
nut, (e) lowering the nut, (f) taking off all the rosin and re-rosining, (g) 
swapping the tangent with one from another key.  None of these has fully 
solved the problem, which is intermittent.  I can only guarantee to stop it 
by pushing down the string next to the nut so it crosses the tangent 1-2mm 
lower.  More rosin helps, but makes the sound too scratchy.
Any more ideas please?
Matt Williams
Norwich, UK

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