Page Builder's page width jumps in 9px increments for me.  I can get 957 or 966px, but not 960 -

Dolphin is very well now to adjust the width of the page, but I happened a problem, if it is

I seen some one asking about this but didn't see a reply.  How do you change the width and/or hight

This might have been asked already , but is there a way to change the width of the main menu?