I will try to remember how we used to set our TR85's. Now bare in mind we swathed all our canola, so the straw and pods were dry, no green straw.
I believe the concave was quite open, like a 12. Rotor-since we were putting a larger swather through a smaller machine, we would run it like 1200. and I believe the wind speed was around 650. Bottom sieve was pretty much closed.
We used to get a really nice clean sample with the old 85's. Lets face it, when the canola is dry and the pods pop open to the touch, most of the threshing is done in the feeder house. Good luck, I hope my memory isn't to far off.