superfish menu forcing horizontal scrollbar

superfish menu forcing horizontal scrollbar

The first generation dropdown works great as it slides down vertically from the horizontal menu. However, the second generation that flies out to the right of the first generation dropdown partially disappears off the right of the page (causing a horizontal scrollbar to appear). My navigation is right-aligned within the center-aligned content area. So all but very wide monitors will see this problem occur.  I would have expected the plugin to be smart enough to prevent this scenario. What I need is for the 2nd generation flyout menu to appear on the left rather than the right of its parent dropdown. I looked for a setting for this and found none. Is anyone aware of a way to accomplish this or otherwise resolve the issue? Thanks!