You have some odd spacing with your h3 headers. Take a look:
http://duluthrobotics.org/special-thanks/
http://duluthrobotics.org/useful-resources/
For your the section headers of the side bar, I would consider adding some more vertical spacing because it looks a little squished compared to the spacing used by the rest of the layout.
Lastly, you should make your logo (bannertext.png) link to the front page of your website. I often forget this myself, this is a common feature among websites and aids navigation.