fixing postural problems

[drcrappants]

i noticed on 5x5s my right lower erector gets fatigued significantly more than the rest of my back. i'm guessing uneven loading, or just me twisting my torso funnily and making that side make up for it.
problem is when i squat, i don't notice it happening until it gets sore. how can i fix this?

[Mark Rippetoe]

Get a coach.