I have a 9500 and need to replace the concave. Was wondering if anyone had heard of a kuchar concave or used one. I called and talked to them about it and they said it reduces back feeding over the cylinder, and threshing area increased because it fits the cylinder perfectly. They said on the Deere concaves they use bars 2-8 are used to separate and on the kuchar bars 1-14 are used. Was just trying to get some info because the price is $2700 or if i should look at some other aftermarket concaves. O yes and the crops I harvest are corn, beans, wheat, and barley. Thanks for any help