8.1. Ensure that the door closes well and that it is leveled. If an adjustment is needed, use a screwdriver to tighten or loosen the screw located under the top
rollers to level the door adequately.
NOTE!
This wheel adjustment can be used to level the door in order yield a uniform and tight closed door seal. It is also
used if the bottom wheels of the door come off their rail too easily, in which case tighten the screws of the top wheels
counter-clockwise which will lift the door panel up and tighten the bottom wheels.