Hi Chris many thanks again for the advise. I have, or at least I thought have sampled my barrier region to death, but as I say some histograms may not be centred around r0. I will proceed with what you suggest. Please find attached a picture of the histograms, the corresponding profile, and a sample mdp file that I use.
groprofile.agr.gz
Description: GNU Zip compressed data
hist.agr.gz
Description: GNU Zip compressed data
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