Menu Wont Center With Site Title (twentytwelve)

Hello all, my site is in its very beginning stages so I’m sure I’ll be making several more posts as time passes. After quite awhile of searching with no luck, I decided to ask my question here.

My question is within the twentytwelve theme.. I would like to have my Site tite, along with the nav menu center aligned. This is what I have so far, but as you can see the nav menu is a little bit farther to the left than the site title. How can I fix this?

Thanks in advance.