[Zope] calling manage_deleteObjects within an objectManager sub-class

I'm having trouble calling manage_deleteObjects within an ObjectManager sub-class. Specifically, I get an Unauthorized exception in _verifyObjectPaste out of CopySupport. Basically I'm trying to make a copy of an object and then subsequently rename it. I've searched the lists and found references to similar problems but no solutions. Any ideas/pointers are appreciated. Thanks, Dave