By design, a gutter is supposed to be empty. So, if you can't use basic scaffolding to do what you need, and you really want the left side of your content to start from the middle of a gutter, you might need to add a CSS class with something like:
margin-left: -1em;
You might need to change the negative -1em
value for it to be half of the gutter's width of course.
Not pretty, but it should do the trick.