Without using an extra victor, you'd have to radically redesign your hopper to be spiral-shaped or similar. We, on the other hand kept our giant-box style hopper and installed ... The Coffee Can of Doom! It's a coffee can bolted to a window motor on the bottom of the hopper. It keeps the balls agitated amazingly well for its simplicity. However, if you want to copy that, you better not use a coffee can, because we are currently the only robot with MaxWell House parts.
