I am missing something, yet again...

I installed SS, went throught the complete tutorial. Awesome. I copied everything from 'tutorial' to 'mysite', changed the $project variable to 'mysite'. Downloaded a theme (greenfield), added the approriate code to _config.php to point to the theme, did a db/build. No errors or warnings. It appears the theme has been applied, but it doesn't look right. My main content of the home page is too wide, my tabs are still up top and look the same as they did before. Basically ugly. I think I have competing CSS somehow going on. Any insight would be much appreciated. (Also tested with blackcandy, same general outcome)