The 3d-printed case that comes stock is extremely frustrating to fit, and honestly not very useful, but i did want something to protect the bottom pcb. I laser-cut one on acrylic for myself, but i included a simple extruded version for 3d printing.

Another advantage of going this way is that the battery contacts can be mounted either between the pcbs or on the underside, for easier access.

Included are an stl, an svg for laser cutting, and the original (messy) fusion360 file.