Spool Holder Tush Adjustable

This is the "Desktop" version of my Sovol SV06 Gantry spool holder.
Since I started 3D priniting, I have never been really happy with the various spool holder designs. For the past 7 or 8 years, I have been using a "Tush" design found on Thingiverse which was working "ok". Filament dispensing worked fine but adjustability to various spool width and sturdiness gave much to be desired.
So! I finally ended my procrastination and after going through a bunch of various designs, I finally ended with another variation of a "Tush" design.
My printers are very carefully calibrated and aside of the threads clearances can be printed as it.
You might notice a 0.1mm gap between the 2 components of a "Tush". It is by design as I wanted the fasteners pressure to apply to the bearing core.
For the large 16mm Adjustment Nuts, I have applied a 102% in X and Y axis.
For the smaller 10mm Guide Nuts. I used 107% in X and Y.
The needed hardware is as follow:
4x 608ZZ bearings (make sure they are deg