I'm working on customizing my first builder theme and it hasn't been easy. One of the last steps is trying to fit the rich text editor into the column space I've designed. It's in a column that's 630px wide and I can't seem to fit everything I want by adjusting the CSS. I end up getting a horizontal scrollbar. Is there any way to adjust this properly or is it because of all the bells and whistles with TinyMC?

The design is fixed width so I can't change that to accommodate the form. I've attached a screenshot. Any help would be greatly appreciated. They want this to launch today but I just don't that happening.