in the CSSMenuWriter/cssmw0/menu.css file, chnage:
ul#cssmw0 ul.level-2 {
border-bottom: solid 1px #3C3C3C;
border-left: solid 1px #3C3C3C;
border-right: solid 1px #3C3C3C;
left: 235px;
}
and:
ul#cssmw0 ul.level-3 {
border-bottom: solid 1px #3C3C3C;
border-left: solid 1px #3C3C3C;
border-right: solid 1px #3C3C3C;
left: 235px;
}
to:
ul#cssmw0 ul.level-2 {
border-bottom: solid 1px #3C3C3C;
border-left: solid 1px #3C3C3C;
border-right: solid 1px #3C3C3C;
left: 180px;
}
and:
ul#cssmw0 ul.level-3 {
border-bottom: solid 1px #3C3C3C;
border-left: solid 1px #3C3C3C;
border-right: solid 1px #3C3C3C;
left: 180px;
}