Upgraded Telescoping Prusa XL Spool Holders Adjustable 1KG-5KG w/ Leveler Clip

I run a very busy printing operation & I mostly print off of 5 kg PETG spools.   I've designed what I think is the best, versatile spool holder option for my XL printers. it looks simple at first glance, however, please read the below, as considerable thought went into its design.  Here's a picture of a 5KG spool side-mounted:

Some highlights:

• Efficient - Utilizes your included, Prusa injection molded plastic mounts for maximum shear strength at the mounting point.  This existing part also has the added benefit of being perfectly smooth (no resolution lines) for maximum performance with the upgraded telescoping shaft addon. It also has built in flexible stops.
• Stable - The model includes a base leveler clip that covers the mount-side of the spool holder, and brings the inner shaft diameter up to the same diameter as the outer shaft sleeve, ensuring the spool sits perfectly level. This leveler cover mechanically clips onto the Prusa Shaft base ensuring it stays put.
• Versatile - The sliding shaft allows you to adjust the protrusion for a spool perfect fit regardless of small size, most importantly (for me), up to 5 kg! The shaft “Clicks” into 3 different telescoping positions for extra stability.  This spring protrusions on the injection molding part add tension.  The XL's filament inputs  being flush with the printer frame mechanically pull the spool towards the printer frame ensuring the  telescoping shaft does not move during printing.
• Versatile - 5kg spools I use have a much smaller diameter mounting hole, the hole is actually smaller than the OEM stops on the included Prusa telescopic shafts.   This new design uses a smaller end-stop diameter so 5 kg bulls can slide over it when extended.
• ECO - Using your existing Prusa mounting shaft minimizes filament usage  while reaping the positive properties of the injection molded part.

Proactive counter thoughts:

• Friction –  There seems to be lots of overcomplicated (in my opinion) spool mount  designs out there integrating bearings to minimize rotational friction etc. etc.  I've been printing 24/7 for years with self designed spindle style mounts and have absolutely never had a failed extrusion motor or any quality issues whatsoever (even with 5KG spools!).   When designing mechanical parts I always try to keep it simple, and this simple design has a proven track record.  K.I.S.
• Spool Jumping - The stop on the end of the shaft is deliberately minimal in diameter,  making it larger would stop it from working with commercial 5KG spools. the filament input on the XL  by default pulls the spool mechanically towards the printer, mitigating the risk for the spool jumping the stop on the end of the telescoping shaft. 

Printing & Installing:

• Installing - removing the Prusa OEM telescoping shaft from the amount requires a bit of tugging to overcome the internal mechanical latches, don't worry they won't break, just wiggle and tug and it will pop off.
• Print -  4 perimeters w/ .2mm layer height to maximize shear strength.
• Print -  In the following orientation, no supports  needed

Happy Printing!