I don’t think all truss rod nuts come off to get a washer on though do they ? , I always thought dual action ones were fixed, otherwise they wouldn’t work both ways
I watch all the Karigan drumming videos, but this guy is good, I’ve got the 2nd track as Babylon burn which is below , the 3rd is the Dubbeez, 4th is swing easy, any idea what the first track is?
I do that every time I pick up my bass, I tune by ear and then check against the tuner, I’m always just a touch under, fortunately all my basses hold their tuning good
You can use these Karl, they come in fine and medium, they are used in furniture making and for fine sanding in between spray coats, I’ve done a few of my necks and they come out so smooth