Adjust PDF view settings in Safari

I use the default PDF viewer in Safari to save scientific articles. When I open a PDF document, the view setting is always too small. The view setting (seen when control-clicking) is "Actual size/single page/continuous." I would like to change the default view setting from actual size to auto size. How do I go about this with Safari 2?

Also, is there a way to change the default view settings easily in Safari 3? If so, I will upgrade to the beta.