Anyone out there Using WebDAV for file access on the Isilon?

I haven't been able to find much in the way of helpful documentation on how to use WebDAV on the Isilon.  I have some users who are looking to use HTTP DELETE as part of one of their processes.  I am trying to assist in their efforts, have already checked the "DAV" checkbox to allow this access.  What port is appropriate for making the HTTP DELETE calls?  Anyone know of any useful documentation for using WebDAV on Isilon?  OneFS version we are currently running is 7.0.2.8.