allisfarmer2, In corn_soybeans you should have intake air shield wide open.Check to make sure that weighted arm moves freely.Sometimes bushings in arm will bind on pivot.Also,check linkage from pendulum to weighted arm,this also can get worn excessively and cause pendulum(air diverter)to not move far enough which limits air flow to shoe.Also,have seen roll pin in pendulum sheared off and air diverter arm moves but diverter inside housing is not.Make sure that there is no cracks in any of your flexible hoses(You can use duct tape to wrap cracks in hoses to get you by).last,make sure all duct work is fully clean before starting.If you have any grain and_or chaff,leaves,etc. in ductwork you will limit the amount of air going down tube.The grain saver blower has a mass volume of air capability and with machine running you should be able to move weighted arm and watch hoses swell.Hop you find your problem, Hyper Harvest II