Lezyne Mega XL mount

I lengthened the arm of this to fit the Mega XL. I also strengthened the cross piece that has to flex when you mount the computer. The original worked, but seemed a little weak in the PLA so I added a little at the ends where it connects to the outer ring.

End Caps for Open V-Slot 2020 with Open Hardware logo.

This is a remix from https://www.thingiverse.com/thing:398515