What Steven said. Some other things I noticed...
Your back position. Specifically, your thoracic spine is hunched over during the lift. Chest up.
You tend to be somewhat inclined forward in your front squat. Get your torso as upright as you can. Although I'm having some trouble with the anthropometrical calculations here, I'm getting the impression that your narrow squat stance might be contributing to this. At least, that's been my experience. Greg?