Copy correct files into domain controller policies and scripts
net stop ntfrs on all domain controllers
regedit hklmsystemccsservicesntfrsparamstart/backup or something deeper. burflags main server for source sysvol d4 other server hex d2
net start ntfrs on main server first then the others second wait for sysvol to replicate you can check the c:windowssysvolsysvol folder and watch the policies copy over.