Combines concave arrangement for corn on 2188

Keystock refers to the style of grate, not the concave. If you have a small grain machine the grates will probably be slotted rather than keystock, which I don't think you will be happy with in corn. If you have the large wire concaves, all you need to do for corn is remove every other wire.

we are running keystock grates large wire concaves with all wires in specialty rotor with two front rows of Gorden Rotor Bars air foil chaffer on food grade white corn, seed beans, and wheat