Please note that official support for this menu version has now ceased. There are still plenty of users, though, and the forum is still running. Some of our long-time users may be able to help you out.
Height? As where the menu bar falls vertically on the page? See my reply to "Main" above for the Top setting.
Or since you make mention of font size do you mean it allocates too much space vertically within each option thereby making the menu vertically longer than needed? If the latter, adjust your Padding setting.