If the opener is adjusted properly the garage door will move up and down in an even motion.
Garage door opening crooked.
A crooked or off balanced door.
Energy from the spring turns the drum which either winds or unwinds the cable thereby lifting or lowering the door.
Warping of the door will also cause it to run crooked and stick in the tracks.
One of the most likely culprits when you have a crooked garage door is a broken torsion spring.
Then look to see if the rollers are in working order.
The door might be hard to open and close due to it binding.
Any of these situations indicate that one or both garage door tracks need to be aligned.
This will cause the unit to stick.
A garage door that s out of alignment can be very dangerous.
If one of these cables is broken power from the spring can t get to the door and the door hangs crooked.
By pushing the door back into position you should have made the vertical track straighten.
They need to have a clear line of sight between them in order for the door to work properly.
Pulling the door up and down is a garage door opener.
Without proper adjustment however the unit may run along the tracks unevenly.
Verify if there isn t a block between them.
Push the door back to adjust the door and get the center aligned again.
First you should check the safety sensors.
There may be a large gap of space between the stop molding and the door.
Your garage door has two overhead springs some doors have the springs on the side called extension springs that are responsible for opening and closing the door.
It is possible that the vertical track down the side has gone out of alignment and shifted due to a slightly loose lag screw.