This design is based on konseben's original design, that was working fine, but i wanted to fine tune it a bit. Print it with at least petg, as pla will melt there under load.

here are the changes that i made:

made it 0.18mm longer(35.62mm to 35.8mm)
moved the C side pin 0.4mm outwards, for better alignment
longer pins(7mm from 2mm)
smaller corner radius(0.5mm from 0.75mm)
moved, shrunk C connector hole, for thicker, stronger part

Update: The v2 design is just to add better compatibility with different printers. I modified the pins to have different size, depending on your printer's accuracy, you can choose between 5 different size: the original and +/- 0.1mm or 0.2mm.

i also included the step file as konseben did, so further refinement can be done if needed.