Truss rod adjustment on 2008 National

[nbs2005]

Hi all,

I've done the reading and know that I have a normal thread (post 2005) truss rod. I was playing around with getting the neck relief correct and not have a lot of luck. Removing the strings and the nut to get a better look at whats going on I'm finding that if I put more pressure on the truss rod (tighten) I start to see more neck dip at the 7th fret. Is this possible? I can't seem to get it flat with no string tension. I'm going to set it as low as I can, then string it up. Looks like I can get between 8 and 10 thousandths. Does this make sense? And thanks National for designing a truss rod nut you can't fully remove the truss rod nut with the access they provide

Jeff

[nbs2005]

More info. The board is much flatter from 1 to 12 frets( 12 fret body join). I'm getting about 4 thousandths relief there (again, no string tension). Still can't get it flat with no string tension.

[Robin, Wales]

Have you called or emailed National?

[nbs2005]

Yes, I've reached out to National. In general I'm curious if anyone has seen this behaviour. This is the first truss rod adjustment that hasn't been straightforward.

[nbs2005]

Jason at National got back to me. They seemed to think the neck was within a normal range. The 12 fret hump on the body is manageable as this will never be a super low action guitar. I was impressed how quickly they got right back to me.

Thanks.