My first time running a rotor and never had a problem setting my walker. I know how to set for cob size and it is taking the corn off the cob fine, but I'm having free grain floating around at the rear of the rotor on power shutdown. When I open the back and windrow it, there is too much grain in the fluff. No shoe loss. This is 22 % corn rotor 310, round bar concave 25, wind 850, 53 lb test weight corn, 4.5 to 5 mph with a 8 row chopping head. There is not much trash coming in except husks. It seems corn is getting caught in the husks. I've tried everything, more and less on concave, rotor speed, and ground speed. Spacers are in. Any ideas for me? I could go 4.5 to 5mph with my walker and I was expecting more from the rotor.