I just traded my 78 for a '15 88, I'm thinking of putting the impeller in instead of chopper. I cut wheat, corn and lot's of green-steam soybeans. I no it will handle wheat and corn but what abought soybeans? Will it be agressive enough to pull all that material out of the discharge or will it plug easy. I run a 40 ft. dynaflex and never had any issues with chopper, just wanting to try the impeller.