Hi Justin, When you import dihedral restraints from TALOS, the FC applies a multiplier to the error - you should think of this error as a 'standard deviation' (or so I've been told), so by default I multiply by 2.0. Hence the results you get - otherwise the dihedral angle limits are very probably overly tight. You can, by the way, set this multiplier yourself by clicking on 'Additional options' when importing the dihedral restraints, and modifying the 'Multiplication factor to convert deviation in constraint range:' field. Bye, Wim