[ccp4bb] Very low B factor

[Jobichen Chacko]

Dear All,
I am refining a low resolution structure of 3 Angstrom. I refined the
structure to 25 R value and 29 R free. But some of the residues are
showing very low B factors (less than 5).Please advice me how to tackle
this problem. As mentioned in a previous post I used babinet scaling in
Refamc but still it is the same.
Thank you in advance. 
Jobi