Matt:
Wow. Thanks! Gracious of you for your continued aid. A photographer's triage.
Yes, the short story is that I am limited to scanning with a Nikon LS8000 that's been cleaned, serviced and rejuvenated. Run it with Vuescan... and basically do nothing at the scanner other than crop the images manually after a Batch Preview scan at 670 and then scan at 4000 to DNG/TIFF. From there, import into Capture One is done without any adjustments. Minimal adjustments are done.... usually take no more than a minute or two per image. I haven't learned dodging and burning with this yet, but that's the next step.
Workflow improvements over the last few months:
1) ID-11 in a Jobo tank on a Jobo machine with a Jobo 16 Timer - I just figured out with the help of someone here on the list. ID-11 seems a favorite with Catlabs and many of my reference sources (British mostly).
2) Exposure meter (randomly) switched to Sekonics. Shouldn't be a deal, but coincided nicely with "better" improvements. Used Gossen Luna Pro and Pentax Digital Spot before - the latter was calibrated last spring by a great LF guy in PA.... so nothing wrong per se with them, but they obviously didn't click, and though I suspected the batteries, I'm thinking it may have been they didn't work with my ergonomics. LOL
3) Switch to the simplicity of a Rolleiflex 3.5E (from sweet but schizo or at least tempramental Rolleiflex 6008 - which is a great system but fairly, over-engineered to a point where I think it may suffer from complexity syndrome).
4) Trial of "just higher than ambient room temp" for developing at 72F. I'm beginning to think it's not an effect on contrast, but the raising of temp in this way forces a more even, consistent "every time it's the same" process. I'd been using room temp and that varied every time as the ground water heats up. While it's possible the higher temp has a contrast effect as Belew suggests, if you guys are right and its imperceptible - which I'll grant is likely, then the trick (magic bullet) is this shift to a higher temp simply means engaging in an effort that finally puts all the chemistry at a controlled even level.
5) The only other "switch" has coincided with my schedule and an effort to focus more shooting time in the morning and evening light.
Which all goes along with your tag line in your signature.... or alternately, the old SNL line from Rosanne Rozanna Danna, "If it's not one thing, it's another."
Thanks for your patient debugging. You and all the guys here have been very helpful. Photography... it ain't like cutting Velvetta with a slicer.