I wish that were the case. On my case 8010 i would have to clean the filter at least once a day and often it would not make a day of hard thrashing. I made modifications put a pipe up above the dust and a precleaner on it and now I would probably make the entire year without having to clean the filter. I usually clean it between crops just because. On the New holland I have the exact same issue It wont make a day with hard threshing before I need to clean it. I have check venturis and all of that but still same problem. I guess I will modify it like I did on the case for next year.I clean the air cleaner once a season with the NH versus every other day with the CIH.