Vanes are set in the middle position. I am running 6 straight seperator bars. Speeding up the rotor only seemed to compound the problem. I am running with all the wires in the concave as I have had very mixed results with having every other wire removed. My thought was that threshed grain was carrying to the rear of the rotor in the shucksIJIJIJIJIJIJIJIJIJIJThus the rice spikes and disruptersIJIJIJ