Last fall put in 3 max thresh and the rest round bar. First crop I did was sunflowers, expected they might well be too aggressive, but did a beautiful job. Doing my first wheat with it now, easy threshing winter wheat, beautiful job. Looking forward to seeing results in harder threshing spring wheat. Conversation with Sunnybrook last year, guy said if it doesn't get the job done in harder threshing SW, to remove first round bar concave (concave #4), put an original close wire concave in position #1 with cover plate, and have the 3 max thresh concaves in positons 2-4.
So far, very pleased. I'm sure impressed I can go from sunflowers to wheat with no changes.