Using a marker or file mark the shaft and the drum.
One side of garage door higher than other side.
Some times you need to adjust the garage door.
If it was opening too quickly move it to the next lower hole.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
Check to see if one door hangs lower or higher than the other.
Garage door crooked and the cable came off.
The most simple and common is door shift.
Vise grip the shaft.
Retest the door balance as you did in step 1.
There are several things that can cause this.
The mark on the shaft should be about 1 4 above the mark on the drum as shown.
In the next series of steps you will move your ladder to the other side and climb up to the left cable drum.
Run your hands between the front corners of your side by side refrigerator doors to determine if the doors must be aligned.
Sometimes your garage door will close on top of an object and the cable on that side will pop off.
Adjust the springs on both sides of the door the same way.