I made new bridge and nut for my mando to improve the sound and it did that but now I have a strange problem.
Each of the first 6 strings are tunned correctly and have perfect intonation checked at 12th fret but : 4th stings are like this:
Fret 0----1----2----3----4----5----6----7----8----9----10----11----12
Note G---A---A#---B----C---C#---D---D#--E----F-----F#----G-----G#
I have tried moving the bridge closer or further from the fingerboard but it casued other problems. The new bridge is one piece and I do not want to modify it before being sure if I should lower or rise it to solve the problem (if I go too low I have to scrap it and make another one). Any idea as what to do?
Thanks in advance.
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