[support] Drop down menu in Marinelli issue

Hi All I am using Drupal 7, *Marinelli* theme. I am trying to have primary menu (main menu) as drop down menu. With theme settings change I am able to have primary drop down menu. The drop down menus width looks unreasonably longer. Say I have 'Home' as primary menu. Say under 'Home' I have 'About us' and 'Mission' etc. When mouse hover on Home, the drop down menu shows, but width of drop down menu is much longer then required. How do I control the width of drop down menu. Any pointers, highly appreciated. Thanks Austin