[PyMOL] PyMol: incomplete replacement of b- and q-factors

Hello all,

I am trying to color several proteins by different factors, e.g., distance from a given point (here the origin). To do this, I replace the q-factor (or b-factor) with my variable of choice. However, most of my files have one or a few residues that are for some reason not affected by the alter_state (e.g., pdb = 1ihm). I can't see any distinction in these residues compared to the others.

example code:

    fetch 1ihm
    alldist = []
    iterate_state 1, all, alldist.append((x**2+y**2+z**2)**0.5)
    di = iter(alldist)
    alter all, b = next(di)
    spectrum b

Thank you,
Joe