This abstract is based on an alternate, improvement control method, to assist the drivers who have had, or recently discovered they have hand or finger disabilities and can no longer use our easy grab ball control disc, because it is too difficult for them to pull against some of the low-end spreader models that use very heavy springs to keep the tow-behind spreader center-column-handle-lever in place, each time the slide gate porthole chute is repositioned.

This alternate control method consists of two (2) improved modified control discs, that incorporates (fulcrum pivot mechanics) to be used in the event the operator's hand has arthritis, carpel tunnel, difficulty in closing fingers, fist, or other hand deficiencies, which makes them unable to pull and use our original twine line grab ball control disc, against the heavy force of those springs installed by the manufacturer.

These two (2) improved fulcrum-pivot-design controls will make it very easy for the driver to still open and close the slide gate porthole chute from the d river's seat, because they use (fulcrum physics) less force to move a heavier load.