If it was opening too quickly move it to the next lower hole.
One side of garage door higher than other.
Adjust the springs on both sides of the door the same way.
The most likely cause is that the floor is not perfectly level.
If you ve had your door for a while or are in and out of it a lot it can easily end up out of alignment.
This can happen when the door has shifted to one side causing it to appear uneven.
It may be the spring.
An alternative would be a pocket garage door that slides sideways on tracks from within the garage door itself so that again the height or width are not effected.
The replacement garage door should be one that hangs above the front of the garage and lowers down from the outside so it doesn t affect the height of the garage.
It also depends a lot on the number of years the door has been up as it could be that the door springs have become worn.
The most common cause of overhead type doors being out of level is frayed cables that grow in length as they fray.
Retest the door balance as you did in step 1.
Or it could just be that the hardware has become loose over time.
Maybe someone bumped into it recently.
If you mean that one side of the garage door is lower than the other and that it hasn t always been this way then you do have a problem.
If you have a 1 gap under the door it isn t necessarily that the door is crooked.
There are several things that can cause this.
When the door is placed directly on the floor and it s not level it causes one side of the door hinge or latch side to be higher than one another.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
A crooked garage door could potentially be the sign of a much larger problem.
The door runs are housed in a garage door track one on each side of the garage door.
Chord length on shaft.
Arc length on shaft.
The easiest way to solve this problem is when installing the door space the jambs off the floor when possible.
I ripped off the old bottom seal since one side of the garage always got wet in rain or snow and i could see that the seal was deteriorated at that side so went and got a new seal removed the old one sanded it slightly then applying the new seal that one side still has 1 2 space higher than the rest of the door.
If the concrete sags on one side you do not adjust the door to fit it.
The most simple and common is door shift.
When this happens you need to shift it back into position.