Using your phillip s screwdriver you need to back out the adjustment screw and the screws located above and below the adjustment screw.
Sliding door lock adjustment.
How to adjust sliding glass door rollers for a smoother ride.
This video will show you how to properly adjust the lock and handle on your milgard sliding glass door.
Now you will be able to move the strike plate up and down.
Download instructions for more information.
If a patio door is difficult to operate won t lock properly or is loose or drafty make adjustments to the roller latch or strike to fix the issue.
There are holes on your sliding glass door that conceal the adjusting screws to these rollers.
Adjust sliding glass door lock handle is using a putty knife remove the strike plate to access the adjustment screw.
On my door the holes had plastic plugs in them.
Inside a standard sliding glass door there are adjustable rollers that help it slide back and forth on the track.