IFB,

The wires were to tip over any remaining stubble and trash so that it all got buried. The wires would float on the soil near the top of the moldboard, and catch the bits and pieces and keep them from getting thrown onto top of the ground. Back then, they didn't want residue, funny how things work out some times.

I took Dad's 4240 out and plowed up a patch of heavy quack grass one time, and the wires made it plug. I lifted the wires up onto the frame, and the plugging problem stopped. Based on that, I would say that they wouldn't help in 200 bu corn stubble. Maybe it was because the wires were old and rusty, and hadn't scoured yet, and maybe I should try it on corn stubble to see.

One other thing, and I'll show my Deere ignorance here, but if that A can pull two 16s, the trash will flow better since there is more room between the bottoms. Two 14s on 16 inch spacing might help as well.