Have you thought about putting duals on the combine, or even on that size combine, narrow tiresIJ If you are running 32" tires, you are going to run over a lot of beans, if you can switch to something that only runs over one row. Using a 16' head would be a little more convenient, that way you could follow the drill pattern. I don't think the 915 has a wide enough cutter bar to cover the drill does itIJ let me know how things work out!