yeah, I mean I guess, I think,,,, I will try to translate put concave rasp bars in door and next row, then half round in back row . Don't know about the theory of beater,,,, Always run 25 tooth sprocket on lh cyl end that turns beater and raise the metal curtain in beans and corn, down in wheat.O clearance is a little close in green stem soybeans, you will wind up about 3_8" and power consumption will be greater. Dry non green stem soybeans are a rare item here in the south..If you still have non threshed hulls in bin add another row. This will work and is basically what I posted earlier.. The rasp bar concaves are GREAT in milo,, thats what they were made for. The airblock I am clueless about.