The Lower Zig Zag currently has three levels: 1F, 2F, and 3F, using the naming convention of buildings in Japan.
Originally planned to accept marbles from the Triple Splitter Small Feeder Feeder, that plan was canceled by the installation of the Lower Zig Zag 3F Net Affector because the Lower Zig Zag 3F was too high (and pointing the wrong way) to allow such a transition to work.
History:
2021 July 06: Pinky tested two marbles running down three levels of the Lower Zig Zag then onto the Right Side Small Landing Zone. Everything worked just fine.
2020 Feb 18: Candy Mama installed the Lower Zig Zag 3F Net Affector, which guides marbles down to Lower Zig Zag 2F, away from Triple Splitter Small Feeder.
May 2019: Now planning to make Lower Zig Zag 3F, a third bar (and another zag) for Lower Zig Zag.
2018 Sep: planning the Lower Zig Zag:
From the top, it will appear in a very narrow zone.
From the side, it will look like this: