Question: 2 recessed holes in the neck pocket…why?

Just bought a lightly used 2017 SR5 off the verb. An even 9lbs and a delight to play. I pulled off the neck to clean it and add a few coats of gun stock oil, when I discovered 2 counter sunk holes in the neck pocket and under the neck plate. One of the holes had a washer in it and was causing a small noise when tilting the bass. Are these holes for a setup jig of some sort? Never seen this on my older Rays.

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