He didn't necessarily
need to adjust the height, I just stated that this has a (slight) affect on tone...but don't put them up too high, or else the magnets can pull on the strings and effect your sustain. Certain pups like Fender Lace Sensors or EMG's, have lower strength magnets and therefore you can raise them as much as you like.
All I really did was to double-check the action and tweak the intonation, which actually wasn't too bad. I also matched the radius of the bridge saddles to that of the fretboard. If he wants a lower action the nut slots will have to be cut slightly lower, and the upper register frets *may* need some slight leveling. But at this stage I wouldn't worry about that.