Screen Innovations Zero-G Owner's Manual page 34

SETTING THE DROP
ZERO-G
THUMB SCREW MUST BE FIRMLY TIGHTENED TO PREVENT
THE DROP SETTING FROM CHANGING.
6
Make sure the wing cables both have tension on them. Tighten
the thumb screw firmly to secure the wing drop setting.
Perform steps 4 through 6 on both ends of the screen.
34