[ccp4bb] Help with MR result

[SUBSCRIBE CCP4BB Liuqing Chen]

Hello!
I have a crystal diffracted to 2Å, and have no homology structure.  As, i can't 
repeat the crystallization, so i try using Balbe and MorDa program, the MorDa 
give a partial model with Q socre 0.46,  Rwork/Rfree 0.50/0.51.  it's hard to 
rebuilt using coot, and when i use Buccaner  or Arp/warp， it's built model 
worse.
I don't know what to do?
can anyone give me some suggestions?
Thanks
Liuqing Chen