the all important change is the $gantry_default_grid variable, however, if you don't change the positions elements as I outlined in my original post, you won't really be taking advantage of all the new possible combinations.
For example, in the 12 column grid, if you have 2 positions, you can do a 2,10 combination, because the 'words' range from 2 to 10. This allows you to have a thin but usable column of 2 grids, and a large 10 grid column.
Now if you switch the grid variable to 16, and try to configure 2 columns, you can only update the columns to 6,10. You cannot make the side column narrower because the words have not been updated to support, 11,12,13, etc. When you add those, as I indicated in the original post you would be able to do a 3,13 combination and again have a thin but usable column of 3 and a large column of 13.
See i do know what i'm talking about
