Originally Posted by glennpendlay
The most effective thing i have seen is to simply squat in a very symmetrical manner, using constant coaching cues, or even a mirror. Keep paying extra attention to this till the imbalance is gone.
I totally agree. If you squat in a symmetrical manner and force yourself to complete ALL reps with symmetric form, the problem will go away. If you allow yourself to slip up and be asymmetric the problem will persist.