I'm pretty sure that there IS lifting going on with the Pros as well, as Brian says, you need to show your armpits more on the backswing. If it makes you feel any better, I fight the same problem. For me, I found that I needed to "feel" more like I was cocking my wrists faster during the backswing (I had taken the "one-piece takeaway" too far) and just a little more lifting of the arms in the second half of the backswing.
This is the one problem I have with NSA. Brian talks about the right wrist bends and doesn't cock going back but I find it very difficult when bending the right wrist to not over-rotate my left arm and get my arms moving very flat around my body. I'll try "show the armpits"; any other feels to get more of the up component with arms going back. Thanks