The Malyan M150 has a different front and rear plate on the Y-axis platform from similar machines. Most leveling nuts designed for other i3 clones are too big and will hit the plates.
This design will just clear the Y-axis platform plates. The nut's larger diameter makes leveling adjustments much easier. The design works with a Nylock type M3-0.5 nut.
The DesignSpark Mechanical source file is also provided.
Sliced with Kisslicer v1.5
I marked one of the positions with a thin line black magic marker to create a reference.