Hi Jerry,
Enclosing the menu inside its own div and adjusting the css for that div would certainly be the best practice, but a quick solution might be to just change these values in the CSSMenuWriter/cssmw2/menu.css:
ul#cssmw2 (Line 4):
margin: 0 0 16px 22px; /* Changed from 'margin: 0' */
ul#cssmw2 > li > span > a (Line 68):
width:96px; /* Changed from 'width:102px' */