In my case there are two screws, on on the either side of the pickups, so I can adjust their height. (hope i got your question right)
Infact I have made the pickups slightly inclined too, making the lower part further away from the strings - so that the higher strings produce less volume. The stock setup used to produce huge volume on e b and g strings - but nothing on D A and E strings - so had to mod a little.
Addendum: I was really skeptical earlier at this experiment of mine, but outof sheer curiosity (c'mon a Rs3K givson is always expendable) and frust with the tone, drove me to doing it.
But in any case it is a harmless activity.
You donít get what you deserve, you get what you negotiate.