Cherry Pi III Printer: Mini V Wheel Carriage for OpenBuild Extrusions (magnetic design)

The Cherry Pi III (http://www.thingiverse.com/thing:344408) started with magnetic balls as the joints. It now uses a spring-loaded string approach, which has different hole locations for the carriage mounts.
2020 extrusions from OpenBuild have deeper v-cutouts than intended with the original Cherry Pi design, so the Wheel Carriage is the wrong size for them.
This wheel carriage is for use with OpenBuild 2020 Extrusion, using the magnetic neodymium ball-mount design with the original hole pattern.

Note: this is intended as a fix for an increasingly outdated version of the Cherry Pi III. It does NOT fit either the current files of the stock Cherry Pi III, or my own Hot End Effector Setup here: http://www.thingiverse.com/thing:518398

For an OpenBuild-compatible wheel carriage for the newer NON-magnetic design, find an adjusted stl in the Cherry Pi forum thread here: http://forums.reprap.org/read.php?178,361141,409638#msg-409638