Hi, Apologies for the strange question. Since phenix has one fantastic tool for each kind of purpose, I was wondering if there is something that could combine features of USF Rave package for example.. basically the question arises from the difficulty of finding NCS operators in some cases, if we have less than three heavy atoms per molecule or map is too bad to build something. I am trying to create a mask around a heavy atom site in the map, give it a translation to the next heavy atom which is probably in the next molecule, give a 6d rotation and use that in Resolve for NCS averaging. Any suggestion / script would be greatly appreciated. Cheers, Partha -- MRC National Institute for Medical Research Division of Molecular Structure The Ridgeway, NW7 1AA, UK Email: [email protected] Phone: + 44 208 816 2515