[ccp4bb] Ramachandran oultliers increase upon restrained refinement

[Meytal Galilee]

Dear all,
I am refining a 2.76A structure using refmac5.
I keep fixing the Ramachandran outliers down to 18 (1.9%), however, upon
restrained refinement, the outliers increase back to 35.
Do you have any suggestions how can I fix my structure?
Thanks,
Meytal Galilee