[Form Check] LB Squat - 285lbs

Weight: 190 Height: 6'1 Doing Starting Strength

[whoops totally forgot to post the video at first](http://youtu.be/ycSu6FOvbYM?t=39s)

Concerned my knees are still tracking forward too far, and that I'm rounding the shit out of my lower back (butt winking?). Am I better off to sacrifice a bit of depth to prevent that from happening?

Any other criticism is welcome. Don't think I'll be adding weight next workout.

Thanks.