GEEETech i3B/C (METAL version): Spool Holder

Hi,
now GEEETech proposes the Acrylic Prusa I3 pro series, B for single extruder and C for dual extruder, with metallic parts instead of original printer ones.
Quite immediately I’ve ordered the upgrade kit in order to improve the stability and the quality of my, already not-so-bad printer, unfortunately the customization I’ve designed for the plastic version of this printer cannot be used on the metal one, so I’ve started designing a completely new customization, starting with all lesson learned from my original customization!
Unfortunately during my different unmounts & remount I’ve quite broken the i3-08 component, the acrylic part, the Z top mount.
I’ve wrote to my GEEETech contact and I’ve immediately receive the STL file to reprint this component and I’ve do… but when I’ve mount it I start to think: with my customization I’ve loose 10mm in Z, why do not design something to recover this loose?
Of course I’ve do, integrated with the new version of my Spool Holder!
With this S