Don't worry. All good.
All of my Sandberg basses had pre-slotted zero frets.
Maybe this is part of why Sandberg basses are so good?
If in doubt, ask at [email protected] and Holger Stonjek himself will answer you.
I have a Sandberg VM2, had two others (don't ask me about my state of mind when I sold them).
All are great instruments.
Don't worry, just enjoy your new acquisition.
Just a thought...
Could it be that the push-pull-pot did not snap-in in the correct position?
Not very probable, but maybe worth a try to pull a bit harder and to see what happens.
Had a similar experience with an instrument cable, it snapped in - but in the wrong position. Sounded like slow...
Hi, the black cylindrical shaped thing reads 100 micro Farad and seems to be your capacitor.
The passive tone control only works half of the travel of the knob, CCW from the center detent (when I remember correctly).
Have you already played your (presumably) beautiful Sandberg in a band...
Any Fender / Squier four string bass neck (with four bolt connection, obviously) will serve.
On mine, I have currently a Squier Precision fretless neck installed.
Loosen strings until they just still stay in place, loosen bolts and align neck until the strings run symmetrical over the fretboard.
Done this on my VM4 after shipment from France to Germany.
Things happen. As @MonetBass wrote, not uncommon.
On other Sandbergs I used to have, the alignment of...
A few years ago I soldered and assembled this one:
https://www.musikding.de/Guma-Antique-Overdrive-kit
Having the VMT also, it's possible to dial in very similar sounds on both. But, generally the Guma sounds like the naughty brother of the VMT.