[ccp4bb]: free R not refining beyond 45%

[vgupta <vgupta@utk.edu>]

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Hello,

I am trying to refine a structure (molecular replacement solution) in CNS and 
though the map looks very good it does not refine beyond Free R=45% and 
crystallographic R=36%. I have two molecules in the assymetric unit. I am also 
sure of my space group as this is the only good solution obtained in AMORE 
(corr.=59% and R=40%).
If anybody had experienced the same i would be happy to know how to get around 
this problem.
thanks,

vibha