X-Carriage et al for FLSun i3 (2017 edition)

This carriage and components were designed to work on the FLSun i3 2017 edition. It may work on more units, however.
I wanted a new X-Carriage because the original acrylic unit warped after just a few months of use. I printed this in PLA and seems to be holding up just fine, but eventually, I will print it all in ABS.
This package has a few features that you may find interesting:

1) The X-Carriage has a standard cable chain mount to hook up an X-Chain.
The link STL files (CableChain.stl a