Page Builder's page width jumps in 9px increments for me. I can get 957 or 966px, but not 960 - unless I completely reset the page. Does everyone have this same behavior? If so, that seems like a bug, or atleast a real inconvience.
I had the same problem Other Pages Width and made the change in the mysql database. I Searched all tables for 857 and then found the the table. main_div_width when I changed this to 960 it fixed the page