*** do_average_coords(): *DIFFERENT* model 4 Res HIS91 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 5 Res HIS91 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 8 Res HIS91 Atom  HE2 
 *** do_average_coords(): *DIFFERENT* model 11 Res HIS91 Atom  HE2 
 *** do_average_coords(): Expect wrong values