I'm wondering if I've done something wrong, or if this is a mathematical thing...I'm building on a 16-column base gantry template, and while I can do a 12/4 split I can't seem to do an 11/5 on the mainbody/sidebar-a.
The other sections seem to have an 11/5 option without problem.
If the option is not available you have to add that option yourself.
Tho I never did that on a 16 collumn grid you can take a look in the "understanding push pull"-link in my signature it's almost the samne.