Office 2008 First Run Control Problems

Hi all, I've got a custom install of Office 2008 going with prefs going out via MCX. All application prefs work as expected on the clients except the First Run (com.microsoft.office.plist). Even though it explicitly declares a value of 1 for First Run, it still runs when you attempt to open an Office app the first time. I'm running 10.4.11 on Server and client both. I've tried applying it at the machine list and group level and on both Often and Always settings. Has anyone else come across this?