I did a search and found nothing on this. I discovered it by accident.
If you press the top switch ( either up or down ) 1 time quick time, then hold it, BOTH windows will go up or down. I see this listed as a 'feature' of the automatic top switch mod, but mine does not have this mod and it still works every time.
The owners manual somewhat refers to it, but says if you continue to hold the switch in the down position for 2 seconds after the top down cycle finisihes, both windows will go UP.