Yes, you could tone the bleached and redeveloped negative without losing what you gained by the staining-tanning method. Whatever selenium would have added to the original will still be added. It will be pretty much like selenium toning a negative that was originally developed in, say, PMK.
I should have mentioned that the tanning action may add somewhat to the sharpness.
I've read that hydroquinone becomes very active
Originally Posted by David A. Goldfarb
at warmer than usuall temperatures and at 80 and up
will develop everything; I'd suppose the more so the higher.
Perhaps your film is not so suited to XR-1. 1978 may also
be a factor.
A question; will that selenium treatment do anything for
the very low density, but some image, areas.? Dan
Selenium doesn't help the low density areas much. It pushes up the highlights.