First the normal stuff like zero it up to concave and set the gauges if needed. Check the seperator pins to see they are 1_2" from helicals or 1" from cage surface. I'd suggest to start with seperator pins retracted approx 30 degrees from being pointed straight at discharge bearing. As rotor turns the pins should work with helicals to keep material moving. You don't want pins to far from cage or helicals so if you adjust the angle you should double check clearance. We're finding an important key to prevent rotor loss is the distance to seperating pins. As dumfrmr pointed out he would like to see better thresh in very hard to knock out wheat. He is not the only one pointing this out in a condition or variety they got into. Growing conditions, acts of mother nature, or variety can hand you this delema. Unforturnatly none of these Bisons were able to run next to a standard Gleaner eight bar or any aftermarket rotor to make a comparison. I totally trust their experience with the job they are used to doing so I only lightly mention how are the other colors doing. They are usually quick to point out they would not be satisfied with how the others are doing. Anyway I would suggest you are prepaired with a couple extra concave filler bars and you know how to snug up the front of concave. Might want to cut a washer out from between cylinder varible sheaves if your not cracking wheat but need better thresh than what normal adjustments will do for you. Make sure chopper hammers are in good shape to keep material pulled away from cylinder and belt is tight and in good shape. Best of luck