Can FrameMaker authenticate WebDAV using NTLMv1, or alternatively, use Win7's Local Security Policy

Can FrameMaker authenticate WebDAV using NTLMv1, or alternatively, use Win7's Local Security Policy (set to NTLMv1) to authenticate WebDAV?  Attempting to WebDAV into Alfresco's CMS/DMS Repository using the 'Browse URL' function in FM10.  When Alfresco is set to authenticate NTLMv2, all works fine, but when Alfresco is set to authenicate NTLMv1, no joy.  (Alfresco won't authenticate CIFS with AD using NTLMv2, so we have to downgrade).  We have confirmed that FM10 is using NTLMv2 by looking at the Alfresco error logs.  Is there a way to change the authentication policy in FM10, or default to what the local PC uses?