Help: JP7 Buzz on D open string
I have a JP7 BFR with almost straight neck, low saddles following neck radius with an action that vary from 0.050 on the lower strings to 0.040 on the higher strings. That’s how I set all of the JPs I have/had. The guitar sounds great, except from the D string which heavily buzz plucked open. From the first fret onwards the guitar sounds good.
What do you think it is? The nut maybe? I bought the guitar brand new 3 years ago and it has its original compensated nut. What should I do to remove the buzz?