Lead screw tower addon

This is a collection of parts that I put together to allow the easy addition of extra lead screw towers onto V-Rail extrusion framed CoreXY printers. The goal: perfect bed movement stability.

Hardware (items first, a few amazon links after to make it easy):

The bottom bracket and stepper dummy require an M5x50 Sockethead bolt to serve as the shaft, each of these should have a GT2 Pully attached underneath a Flex coupling.
Each are attached to the V-Rail extrusions via M5x10 Socketheads into M5 Square nuts.

The bottom bracket spacer is attached using four M3x25 Socketheads and the internals require a series of 5x10x4 mm bearings (one on top, and three on the bottom).

The belt tensioner requires a GT2 idler pulley set in place with a M3x25 Sockethead into a M3 nylock nut.
The tensioner arm is held into place atop the spacer using 2 M5x10 Socketheads, one from the top, the other from the bottom.
The tensioner base should be attached to the V-Rail with M5x10 socketheads us