Runco 1080p Owner's Operating Manual page 54

Installation
Yaw Adjust: Loosen the Yaw/X-Adjustment Levers to allow the lens to pivot freely from
side to side. Then, angle the lens to even out any left-right pincushion distortion:
Wrong Position
Once the proper lens angle has been set, firmly tighten the Yaw/X-Adjustment Levers to
secure the lens in place.
Geometry:
1. Input an anamorphic cross-hatch test pattern to the DHD Controller.
2. Loosen the three Lens Rotation Set Screws
(shown at right) on the lens adapter plate just
enough to allow it to rotate freely.
Anamorphic Lens (Top View)
42 Runco VX-44d/-55d Owner's Operating Manual
Correct Position