My truss rod has moved. What I mean by that is, your basic allen key is shaped like the letter L, and the small part of the letter L goes in the sound hole and makes contact with the truss rod. That’s no longer the case with my guitar. If I put the long end in the sound hole I can reach the end of the truss rod. So my truss rod has moved - it’s receded. Currently, the neck is perfect so I don’t need to use the truss rod, but I’m just wondering why this has happened. It’s a Martin.
Hm, that might happen. It might be that the routing for the rod has been a bit generous, which might have allowed the truss rod to be pushed in a little bit.
You basically have three options:
- Live with it being less accessible
- Try to get it pulled back out a small bit
- Try to get the routing fixed
The last options would require removing the fretboard to get access, unless we knew exacly where the routing is, in which case we could also drill a small hole from the back of the neck. But it is quite complicated, so unless this is a big problem for you it might just be best to live with it and just get a longer key if you need it.