Public folders (and subfolders)

Good afternoon,

I've been looking through our Enterprise Vault (10) and checking the public folders, to ensure that they're being archived and clearing off Exchange.  When I joined this place, I was told that we needed to manually add each new public folder to EV as they were created on exchange; this was only done for the root folder, as new subdirectories were automatically added in EV.

This doesn't appear to be the case for all public folders, and quite a few of them have 20-30 subdirectories; some public folders aren't being archived at all.  My questions are:

1) Is there a way to add a top-level public public folder to EV and have it automatically archive subdirectories?
2) Is there a way to have enterprise vault automatically archive every public folder, and automatically include any new additions?

I can't see anything obvious, and I'm feeling a little obtuse.