*** do_average_coords(): *DIFFERENT* model 6 Res HIS17 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 9 Res HIS17 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 10 Res HIS17 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 17 Res HIS17 Atom  HE2 
 *** do_average_coords(): Expect wrong values