Sue,
Keep up the good work. I almost understood that comment! If redshift is simply explainable by the increasing orbital paths on the Shrodinger spherical (causal) wavefront) at the DFM would imply, then that element will be constant (if subject to refractive perturbations in between). Of course there would still be both red and blue shifts from recession and approach, as we find locally.
I'm pretty sure I gave you links to my paper & video deriving the related cyclic cosmology (a scaled up quasar jet distribution) and helical path expansion, but if not, here they are;
www.academia.edu/6655261/A_CYCLIC_MODEL_OF_GALAXY_EVOLUTION_WITH_BARS
very best
Peter