Trying to build our new robot and I broke the switch plate. I added .4 mm on the long side of the inner rectangle (thinking the reason it snapped was because it was a bit snug). This is the plate from part # 39129 (Tetrix On/Off Switch Assembly).
I only made one print of this, so opted to bump the infill to 50. It still has a little bit of flex, but I don't think it will be an issue.