This is what I'm doing currently with a S670. Rotor 450. Fan 770. Chaffer 12. Sieve 4. Concave 20. Feed accelerator slow speed. Seems to be working reasonably well.
And of course keep your ground speed down around 3mph if the canola is north of 50bpa.
They have a good optimization team at South Country Equipment that helped get to those settings. Had losses down to less than .75 BPA. Pod pieces in the sample but dockage was less than 2%. My view if the Canola sample is too clean probably throwing out the back.