I've owned this for several years and I've never gigged with it. It's stayed home the entire time but has been in storage for the past year and a half so the frets are in need of a sanding and a polish. The blemish shown in the 4th picture is the reason why. It's a bit of discolouration on the top of the neck near the 12th fret.
You can tell when the bass needs a setup as the 13th fret on the G-string becomes difficult to sound properly.