Adjustable vanes for use in a cylindrical rotor cage of an agricultural harvester

A threshing system for use in an agricultural harvester, the threshing system comprising:

• a rotor cage comprising a plurality of slots therein, the rotor cage comprising a generally cylindrical inner surface;
• a vane pivotally coupled to the rotor cage and comprising:
• a generally helically curved inner profile;
• a surface being an outer profile that is opposite the inner profile and is generally helically curved over a portion of the vane, the outer profile being positioned closer to the rotor cage than the inner profile;
• and
• a flat portion;
• and
• a shoulder bushing extending through the rotor cage and in contact with the flat portion of the vane, the shoulder bushing configured to space the vane a predefined distance from the rotor cage when the vane is not pressed by crop material and allow movement of the vane toward the rotor cage when the vane is pressed by crop material.