resize menu or reduce space in the menu

First: sorry about my english I use clean box pro for a client. The problem is, that the menu or submenu is oversize! See: http://prntscr.com/exuq2c That means, we have to much space between the menupositions, so that we can not add a new position, because the menu is to long! How can i reduce the space between the positions? Thank you in advance for your help. Regards from Mallorca hrh