That is a bummer.
Not sure what he did to the pick ups - were they in the X before? Hopefully he did not mess them up.
And, if the truss rod is real tight, it will bow the neck back pretty badly. This is not good. Both of my Alembics barely have any force on the nuts on the truss rod. In fact, my fretless just barely has the nuts on.
Another possibility would be to use Joey's instructions coupled with several videos on bass set-up on You-Tube. And, if you have any bass or guitar friends, they could possibly help.
I'm pretty lucky. I know a good luthier and 2 really good guitar techs. Plus, I learned by watching and playing with a cheap MIM Jazz first.
Good Luck,
Stephen