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 using M5 washers to prevent deformation; furthermore, the assembly should be anchored using M5 square nuts just like the parts above.

The top bracket requires the same anchoring hardware to the V-Rail along with four M3x10 Socketheads anchored into the leadscrew fitting.

NOTE: The top and bottom brackets are the same part.

Links:

400mm 8mm Lead Screw - https://www.amazon.com/gp/product/B017AR5QBS/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
Flexible Couplings 5mm to 8mm - https://www.amazon.com/gp/product/B016KFRR0O/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
5x10x4 mm Miniature Deep Groove Ball Bearing - https://www.amazon.com/gp/product/B00ZHSTKCE/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
GT2 Timing Belt Pulley 16 Teeth Bore 5mm Width 6mm - https://www.amazon.com/gp/product/B019GI5DVC/ref=oh_aui_detailpage_o04_s02?ie=UTF8&psc=1