I just adjusted mine last night using the "towel method". It took a few tries, but the door opens and closes much easier now, and the interior panel doesn't hit the rear seal because of sag any more.
One thing to be careful of is that when you remove the gill cover, there are stacks of shims under the cover at the screw points. When removing the cover, make note of what shims go where. Also, I found it helpful to put a dab of paint on the hinge at a couple of spots just to give me reference of where the hinge started and where it moved to. IMPORTANT: after you adjust the door, make sure you check window to seal engagment. My first adjustment attempt that had the door "hang" correct caused the window to pinch the seal wrong and would have resulted in horrible wind noise. This was caused by the door being about 1 or 2 MM too far forward. I redid the adjustment using the paint marks as a guide and got the hang and the forward/rear adjustment correct. The whole process for the drivers side door took about 30-45 minutes.