I broke the original I printed months ago by accident. I wanted to improve on the original design slightly so I merged the guide with the other end caps. It came out great and works great.

I had to clean-up the original mount in netfabb so it would manipulate properly in openSCAD.

Printed with 25% fill. Could likely get away with 10% but I wanted this one a little more durable than the last one I printed.