Print reduction question

[snark]

I mixed up some Farmers Reducer and set about working on some overexposed prints. They started to lighten evenly, but toward the end (before I was ready to stop the process) they started exhibiting light streaks and spots. This was with RC paper and I had not pre-wetted the first of them. I put a couple more in the washer and tried again after they had soaked for a few minutes. The result was a bit better, but still unacceptable.

Should I use less of the part B and let the process take longer so as to control it better? Or is there another trick to print reduction that someone can pass along.

Thank you.