Hey Don
Need to address the upper back and elbows cranking up. The upper back needs to hold its position while you lean the torso over from the hip. Rather than collapsing the chest and trying to point that at the ground.
Try thinking about sending the hips back and away from you as you descend. Like you're trying to touch the wall behind you with your cheeks. All while keeping the elbows down/in position.
Something else that may help, but is often taken for granted is eye position. Give yourself a small target to stare at about 3-5 feet in front of you.