CSS from punbb conflicing with my CSS?

Sorry if this isn't the right forum, seemed the best fit.

Anyway, I've just set up a PunBB forum on my site. I've edited the template so that my site header is used for the forum to keep the look and feel across the site consistent.

Here is my forum URL: http://www.kentuckygolfing.com/forums

1. In the header, the RSS subscribe links should be beside each other, not one on top of the next.

2. The navigation menu seems to be wider on the forums homepage than it is on the other pages of the site. I'm using the inspect tool from FireBug and when I hover over the nav, it shows it being wider even though the width is set correctly. If you hover over top of the "home" link, you can see that the hover state (blue gradient background) does not line up with the left side of the forum like it should

You can compare the forums page with another page on the site like: http://www.kentuckygolfing.com/about

All I've done is copy/pasted code from my other templates over to the forum template, so I can only assume that something else in the forum css is messing with the lists that I've got since it works fine on every other page of the site.

Anyone have any ideas?