Hi Carl I thought it was fairly clear but try this.
http://codepen.io/anon/pen/VYqprL
You should be able to drag the black section (drag2) left and right. But enabling drag1 causes drag2 to snap back to its original position. comment out
drag1[0].enable();
to see how dragging drag2 should work. Commenting in or out one line of code to see the issue is about as reduced a case as I can make it. Matt