We use all large wire concaves with every other wire pulled, with coverplates for beans,l sorghum, and wheat. And, I think, you have to have the keystock grate for the disrupters. Also put in a Hillco fan kit I got from Gordon. I was also having trouble with chaff on the seives untill I installed it, night and day difference. As far as power, we changed rotors when we put the rice bars in so I can't really say. It's pulling pretty hard, but the beans have been extremely tough, everybodies running slow. I haven't been around anybody with disrupters on a standard rotor. Best bet is to follow the disrupter link and call the guy that sells them. So far we are real happy with the performance of this setup. Best bean sample that we have had and also best trash spreading. Chads