We have made two modifications to our Quick Action Harness. Our original model, on the left, shows a large black knob on the stomach plate, which is used to secure the up and down adjustments to the telescopic arm. This has been replaced by a snap button system, shown on the right. Just press on the button and adjust the telescopic arm up or down. The button will automatically pop into the next hole.  Also, there is no longer any part of the telescopic arm that protrudes from the bottom of the stomach plate. The next modification was to change the shape of the stomach plate, decreasing the width of it slightly.  A larger image of the harness with the new modificatons is shown below.