I ran a 3' auger extension on my unload auger so there would be no chance of hitting my grain cart. It worked fine, BUT I was very careful to unload it and slow on the endrows. There was more flexing of the base of the auger than I would have liked. If I was going to keep the combine, I would probably try to rig a support on the base to the end, like IH has. THis would give it the extra support . By the way, I was able to hit the exact center of the grain cart with the graincart running with over 30 inches clearance from the end row of the 12row. Peace of mind!!