Chain system for the Neptune 3 plus, would probably work for 4 plus as well. Designed on the popular chain series: https://www.thingiverse.com/thing:6305733 But modified to be smaller chains that fit the bed cable.

System is meant to be used with silicone spacers and used with specific bed harness. I used: https://www.printables.com/model/484701-neptune-3-pro-bed-harness-support/files but other ones may work assuming the pegs are in the correct position.

Connects to frame using existing extrusion screws and mounts into through hole. Will need to remove existing through hole relief piece, most likely resulting in its destruction.

Used zip ties to increase rigidness. I would say its a necessity for now until it annoys me enough to redesign.