Quote Originally Posted by wazkelly View Post
How flat is the neck?

Sounds like you need to run a long straight edge the whole length of your fret board to see where things dip. A long metal ruler or even a spirit level should do the trick as if you are that low at the nut your problem is most likely elsewhere and my bet is on too much forward bow in the neck.
It appears straight from the nut to the 12th fret with a metal ruler. The other longer ruler I have just sits on top of the bridge so I can can an absolute indication on the full length. I might be able to cut 20mm off it tomorrow or have a shop around for a spirit level that will fit the length of the fretboard.

I did have backbow, maybe I loosened the truss rod too much. I was following the intonation guide and was trying to close the gap at the 9th fret so a business card just fits.