I am running a 2188 in wheat and I am seeing a little loss I think coming from the rotor.I installed the first three wire concave's and am running the rotor speed at 750-800,Concave setting around 2-2.5,Fan speed at 1050,sieve and chaffer settings are at the book setting's.Can anyone give me a idea what else to try to reduce rotor loss? I am thinking rotor loss because I see wheat on the ground next to where I already cut and also when I was dropping without the spreader's I could see wheat in the chaff on top of the windrow.