If you are running lightweight stock on your windmill, a slide can be very helpful. This is a plastic sleeve that fits over the sucker bar reducing air flow that can cause too much fluffing into top of feed pile and subsequent misfeeds. There are several colors of slides with differing sizes of air holes for the particular kind of stock being run. Make sure when running thin stock that as little air as necessary is being used, that your Thin Stock Knob is pulled out and speed of press is reduced to allow more control.