Hi,
I just encountered a problem during handling the residue fit: after using the program "real space refine zone " and "regularize zone", the residue cys 434 and his 435 have fit the map, but two dash lines were formed between the Carbonyl  O  and C in cys 434 and Carbonyl O in his 435, I change the position and orientation
 of  the residue, even mutate the residue, delete it and create it again. However, the two dash lines still can't be removed.The picture show this problem in the picture in attachment. 
I hope anyone to give me some  advice and suggestion to solve the problem, I would 
 appreciate hearing them.

Thank you!,

 Dorothy