Well, we tried paddles on all the rows, we also tried reversing the chains. Then we talked to the guys at Calmer's, bought their 5 tooth drive sprockets and chains, put all 24 of them on one morning, and never combined corn as clean as we did this fall. NOT ONCE did we see the buildup of trash like before, even in those dry afternoons when everyone else was having troubles. Our 1293 has three seasons on it now, a neighbor just purchased a new 1293 for this season, and had the guys at the Deere dealership put Calmer's stuff on it before he even took delivery. Money well spent. www.calmercornheads.com I think is their site. My $0.02 Hank