[phenixbb] How to reduce clashscore value

Hi all, I'm now using phenix to refine a small protein about 300 residues long. The resolution of my data is about 2.9 angstrom. Currently I got a refined model with good R-factors about 23/26, RMSD very reasonable and no Ramanchandran outliers. However, I found that the clashscore is extremely high: 63!! And rotamer outliers are also a lot: 8.5%. I wonder, what kind of stretagy I can use to reduce this? Thank you very much! best, Celina