my 715 IH gets 2-4 inch soybean stems and too many unshelled pods in the grain tank, in corn i get too many cob tips. this machine has what i call a long finger top seive, and blunt/short finger bottom seive. should i buy a blunt finger for the top, or just a round hole soybean seive for the bottom and not worry about the corn problem. fan is wide open and i run the seives almost all the way closed. please help.
kirk