Thanks Konical. I bet you're right!; that's like keeping Delta 3200 for 20 years!

Now, I haven't heard anyone's thoughts on the 35mm film that's not nearly as expired as the Verichrome, and really that's what I'm most interested in getting right.

Do you think that going with the published times (above) + 40% development would be a safe bet?

And, let's say I wanted to switch to dilution A and a lower temperature. Is there an easy conversion I can do? Like, "dilution A, minus 3C and you can use the same time as dilution B".

Or is changing temperature pointless, same as changing dilution? Or how about keeping dilution B and decreasing the temperature while increasing the time?

Any advantages, any logic behind this? These are the thoughts I'm grappling with at the moment.....