So, I had another try at this film/dev combo (my last) and felt,
in the interest of full disclosure I'd post the results. Not sure of
the rules regarding external links but here goes:

I thought I was pretty careful with the exposure and development but, apparently, was /not/ careful about removing the rem-jet but that's not
the cause of the uneven color.

It seems like even slight under/over exposure really throws off the result. The couple that are passable also seem to have the most even exposure.

On to something else!