You're doing what you were initially doing on the descent backwards: you are fully extending your hips before your knees finish extending. This is in...
You are thinking about some of these concepts with sufficient granularity that they are ceasing to become helpful. I am going to try to be exact here...
Back is coming out of extension a little bit on these. Try harder. Don't raise your neck: keep your gaze directed towards a point on the floor labour...
From what I can see this looks fine, other than being perhaps a bit too deep. What is the connection between your initial problem and this squat? Can...
I would be very surprised if you could make twice weekly increases on your squat for all that much longer while your deadlift slows down. If you like...