Tronxy X5S Improved Optical Endstop holder for Z axis (or other 2020 v-slot rail)

I was interested in "endstop 1" from the original set because my Z carriage is getting closer to the top of the frame with some mods, but I still want to use a corner brace on that corner.

I think it was an untested or rejected design because the nut recesses are too small for M3 nuts, and the tab on the back is problematic to print, too deep, and too narrow to do any good.

This one will stay vertical and the hardware actually fits.

Prints vertical without supports (but you may want a