Originally Posted by D string
What type of guitar is it ? The reason I ask is that the 14th fret is way up the neck and unless it's a cut away model you would most likely never play that high up on the fingerboard. It may be better if you keep it as it is. Most acoustic guitars begin to taper off up near the 14th and is known as fallback or fall away. It keeps thr string from buzzing when you need to play higher up near the neck joint to body area.
I don't know about this. If the guitar is 14 frets to the body (with no cutaway), that 14th fret would be quite reachable. If nothing else, I use it to play a D chord an octave up (with open D string). I would not be satisfied with fret buzz on that fret.