On Tue, Apr 3, 2012 at 9:59 AM, Christian Roth <christian.roth at bbz.uni-leipzig.de> wrote: > After refinement I have a R/Rfree of 0.1294/0.1670. > In some shells there are values close to 0.100 and in the lowest shell Rfree > is lower than Rwork. Are you absolutely certain that you used the same R-free flags throughout refinement? -Nat