Navigation Menu Width

Hello, I just discovered your plugin and so far I love it! I finally managed to remove default header from certain pages so that only the chosen slider is visible. However, I do have one annoying issue. If you look at this page (http://www.blackboarddreams.com/about/), you will see that the navigation menu below the slider is “thicker” than the primary nav menu. This only happens on this page where I included the slider via this plugin. How do I return the secondary nav menu to normal width? Thank you!

https://ww.wp.xz.cn/plugins/genesis-custom-headers/