Have a question about the augers under the rotor.
Was there some company making the left auger turn
in the oppisite direction to through the grain to the right
side underneath the tube or in a CCW direction?
Comes standard from factory for a number of years. Not sure about a company, but here at our dealership we used to put reversed flighting on it and swap the drive gears on the rear of the auger. Reason for this is because of the pinch point of rotor to concave contact, the left side auger generally over loads more than the right. This reversed flight auger spreads the grain from the left side more to the centre / right so not to overlaod the sieve. The auger is only good as long as the rubber paddle is fitted to the shaft. If this is not there or is in the wrong position, the reversed flight auger is as good as useless.