Yep, we retro-fitted one of the new V-hutch air intake systems on a Machinerylink combine brokered from a Wisconsin farmer. We never had to clean the filter again in KS wheat harvest and I don't think HandK farms in WI had to clean it all fall according to Nick A. It's a simple system, draws ambient air (higher pressure and cooler than out of the rotary screen box like X, Y and Z. All said and done, those Claas _ Germans do kind of know something about combines too. Probably the only thing that would be better would be the dual overhead rotary screens like the XBR2 Bi-Rotor had. Some day we'll get to see for sure, for some W, X, Y , Z company. AGV