Not a bass, but hear me out.
This is James Gay, master builder at G&L. In this video, he's going from a plank to a custom built guitar for Jerry Cantrell (Alice In Chains, solo).
At 18:30, he takes the guitar that he JUST got done setting up and puts it in the plek machine. My feeling is that if the guy who spent days building the guitar as perfectly as possible uses the Plek to make it absolutely perfect, then probably the off-the-shelf instrument from Sweetwater could use it as well.
So Anyway, thanks for posting. It's nice to see what goes on at the Custom Shop.
Except now I want a G&L Fallout from the Custom Shop.
#GoFundMeHurricaneJimmieWantsAG&LCSFalloutBass