I needed to increase the distance between shelves by 1cm, so I used the bottom leg from the original model as the profile for this shelf riser.

While it achieves the desired result, the legs no longer clip to the bottom of the shelves below. I'm relying on the weight of the shelves to keep them seated in place. If you use this, please make sure your shelves are stable, and remove everything from the shelves before lifting them.