Running a 16 row 30" head on a 590r Lexion. 200 bu corn with dry brittle stalks. When the crop is damp it does fine but from 11-6 it is terrible. The outside 4 rows on each end do fine but towards the center it builds up. I have the dry corn kit and a mini reel on it that helps but still doesn't cut it. I've tried from 300-430 rpm on the feeder house. I can't open the deck plates anymore without letting ears through. I'm sure that I'm the only person to ever have this problem. Where's the man size auger for a head this big?