I don't have any Farmers Reducer and it would be interesting to try, if I can pick some up locally. I will look tomorrow.
I swallowed up that reference (and others) to the ilford pdf long ago. It's one of the reasons I am doing what I am. It wasn't methodical in its approach and just gave 1 or 2 unique examples. It didn't take modern emulsions into consideration or if you wanted to use....fuji....foma....lucky.....etc
Dr5 is living proof that a systematic approach is possible. They have it all worked out; pushing, pulling and the like. When I demystify all that I can, I will try to make some sort of newer reference. Something a lot clearer and relevant than is currently available. Which brings me back to the question at hand; arggggg fog...