Should I Be Concerned?

[himluis1]

Damage looks like the very outer area. Inside looks sound and as you said it has no issues. Keep

Like i stated before
i put a little mark with a green color marker and used an allen key with loose strings out of the way and was able to do quarter turns either way and saw the mark move , that tells me the truss rod works just a bit worn out …

 

[himluis1]

Also I felt it was buzzing a bit too much for my test when open strings did a truss rod adjustment without too much effort , buzzing is gone ! action still good ! is working like is supposed to other than a bit worn out at the edges … a keeper for sure as an right now

 

[himluis1]

I bought a mint MIM fender jazz from GC that was like this, I sent it back. It may be a sign that the neck is not stable and needs frequent adjustments. Final test? How does the neck grain look? Straight up & down or all directions?

 

[Gervais Cote]

Your MIM was old enough to have a single action TR. The nut just screws on. This is a double action TR and the nut can't be removed without destroying the rod.

I know and that’s why I prefer simple designs that are easier to repair.

 

[bigdaddybass12]

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It does have a lot of circles or grain run-out. Here is my fender, has them also, not as pronounced. The other is a Ray4, it is more just north/south pattern. I live in NW Fla. so always humid! Necks seem to stay calm. The grain run out does not necessarily mean neck will be unstable ideal neck has straight grain Funny my cheapest bass has the best neck grain. Go figure.