Andrew:
Have you considered simply saving whatever settings exist when the grid is closed? While every Adagio user should know about, and use, the Grid Editor, there are a large number that don't. And even those that do know wouldn't automatically think to open and close the Editor to save their settings. There must be a large percentage of Adagio users who position their grid just perfectly and then find to their disappointment that the settings have reverted when they next open the screen.