Dear phenixbb. I am currently running phenix 1.8.2-1309. My goal is to use group ADP with 2 b-factors per residue for the protein and individual b-factors for solvent. However, this does not seem to be working even though the system seems to recognise what I want to do. The refinement output gives what looks like individual b-factor refinement... ================== Extract refinement strategy and selections ================= Refinement flags and selection counts: individual_sites = True (4048 atoms) torsion_angles = False (0 atoms) rigid_body = False (0 atoms in 0 groups) individual_adp = True (iso = 127 aniso = 0) group_adp = True (3921 atoms in 967 groups) tls = False (0 atoms in 0 groups) occupancies = False (0 atoms) group_anomalous = False In troubleshooting it appears that with Group ADP with 2 b-factors per residue, the solvent B-factors are not being refined, i.e., remaining at the Wilson B that I set previously. For Group ADP with 1 b-factors per residue - everything appears to refine OK. Any help would be greatly appreciated, Regards, Joe