My 2 cents:
Not very familiar with the twin alnico humbuckers but if they're this type:
you might try removing the pup covers and checking the pole pieces. I assume they're not adjutable and but MAY be matched to the radius of the fretboard & strings.
If they're NOT adjustable or raduiussed (SP ?) you may want to return it for them to adjust for you.
I wouldn't invest extra $$ into an instrument that should have been good to go. Have them repair/ adjust it if you're on good terms with them.
Sweet piece BTW, nice find.
-GiL