I would suggest pulling every other pin in the concave and cutting it half off. This will keep from overloading strawalkers, although this has a reverse affect in soybeans. A 25' platform will overload sieves in my past experience. Had a 9500 set up this way with 6 row, corn eattin sob! Traded that for 9550 choked it down to 3-3.5, but it does a much better job in beans off the sieves. I hope this helps your decision.