Does the truss rods engagement add stability to the neck?

[Zootsuitbass]

I have a bass. It was made by a very reputable luthier,
IE good stable wood.
The truss is not engaged in the set up that I have at this point. Bass plays very well.
The neck isn't quite perfectly stable and because of lack of truss adjustment I can't minutely compensate.
Would a refret and the carving relief into the fretboard creating the need to engage the truss be a benefit??

 

[Bruce Johnson]

I have a bass. It was made by a very reputable luthier,
IE good stable wood.
The truss is not engaged in the set up that I have at this point. Bass plays very well.
The neck isn't quite perfectly stable and because of lack of truss adjustment I can't minutely compensate.
Would a refret and the carving relief into the fretboard creating the need to engage the truss be a benefit??

You should be able to minutely compensate the adjustment of the neck with the truss rod. If the neck moves slightly (in either direction), turn the truss rod enough that it engages and pushes the neck back to where you want it. If the truss rod is in the central "dead zone" right now, that's okay. When you need it to do something, turn it out of the dead zone to get it working again.

The point is: Don't worry about the backlash in the rotation of the truss rod nut as you turn it. It doesn't matter how many degrees you turned the nut. The important thing is to turn it enough to adjust the relief to where you want it.