Just a simple modification to @BorisAvramov_915542's original X Axis model. The Neptune 4 Pro assembly is slightly different requiring the thin ridge mating to the printer's housing to be a little shorter.
The model is a tight fit like the original so it stays in place without the need for clips or glue.
The author remixed this model.
Modified the length of the “side wall” bits to be shorter so it fits the Neptune 4 Pro without the need to cut/trim down the original model post-printing.