That sounds like a good idea. We would be no where without someone tring this,that, or the other thing to get results they want. First you might want to be sure you are hyperized to get best straw possible to discharge. Next you might want to try cutting with chopper on slow. I would try this when harvesting to see that you don't start robbing power from rotor constipation. One thing we do to prevent chopper constipation is weld iron to bottom side of chopper floor. We cover the last two sets of holes just before chopper. We weld back of rectangle holes to basically taper off the square edge. If you choose to make up some special blades you may only need to weld a couple inches of 5_16" or 3_8" round stock to bottom of leading edge of blade. like the other guys said you must maintain balance especially with chopper on high speed. Slow speed will be less cridical but you still would want to check with a fine scale. You want to match the weight of blade sets oppisite each other. Make sure there are not allready cracks accross mount holes on blade and be sure to torque 1_2" grade 8 bolts to 100 ft. lb. area.