Duplicating Default Theme’s Text Style

Hi all. I’ve been doing some heavy modifications to a theme for my production blog – originally it was to be based on the default wordpress theme, but I needed to find a theme with a menu bar. Now that I’ve got the new theme working pretty much the way I want I’m trying to replace all of the text styles in the new theme and mimic the style of the default (kubrick) template. I’ve tried replacing the body tag stlye wih the one from the default theme, but for some reason the text still does not look the same. Also, the post titles seem to be in a serif font, even though I’ve scowered my style.css for any mention of serifs but have come up with nothing.

If somebody can help me duplicate the text look of the default wordpress theme it would be greatly appreciated.

Here is the link to the template in it’s current form:
http://charliegavin.net/blog/

Here’s the link to the stylesheet:
http://charliegavin.net/blog/wp-content/themes/default/style.css

And here’s a link to the default wordpress theme’s stylesheet:
http://charliegavin.net/blog/wp-content/themes/default/style.css

Thanks in advance!