Hi drnibbles,
If I understand your requirement correctly, you need to add a new Scope Rule to restrict your search to a list type or list item type.
Based on the reference: http://msdn.microsoft.com/en-gb/library/dd584327(office.11).aspx, it seems that the STS_ListItem and STS_List are two types and you need to use a specific list type and list item type.
Such as:
"STS_Web": // Site
"STS_List_850": // Page Library
"STS_ListItem_850": // Page
"STS_List_DocumentLibrary": // Document Library
"STS_ListItem_DocumentLibrary": // Document Library Items
"STS_List_GenericList": // Custom List
"STS_ListItem_GenericList": // Custom List Item
"STS_List_Links": // Links List
"STS_ListItem_Links": // Links List Item
"STS_List_Tasks": // Tasks List
"STS_ListItem_Tasks": // Tasks List Item
"STS_List_Events": // Events List
"STS_ListItem_Events": // Events List Item
"STS_List_Announcements": // Announcements List
"STS_ListItem_Announcements": // Announcements List Item
"STS_List_Contacts": // Contacts List
"STS_ListItem_Contacts": // Contacts List Item
"STS_List_DiscussionBoard": // Discussion List
"STS_ListItem_DiscussionBoard": // Discussion List Item
"STS_List_IssueTracking": // Issue Tracking List
"STS_ListItem_IssueTracking": // Issue Tracking List Item
"STS_List_GanttTasks": // Project Tasks List
"STS_ListItem_GanttTasks": // Project Tasks List Item
"STS_List_Survey": // Survey List
"STS_ListItem_Survey": // Survey List Item
"STS_List_PictureLibrary": // Picture Library
"STS_ListItem_PictureLibrary": // Picture Library Item
"STS_List_WebPageLibrary": // Web Page Library
"STS_ListItem_WebPageLibrary": // Web Page Library Item
"STS_List_XMLForm": // Form Library
"STS_ListItem_XMLForm": // Form Library Item
Hope the information can be helpful.
Lambert Qin
TechNet Subscriber Support in forum
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Sincerely,
Lambert Qin
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