Version 2 of PrusaXL side filament bypass - PC4-M6. Now with holding rod (or an M3 bolt)
 https://www.printables.com/model/1133554-optimised-prusa-xl-side-filament-bypass-pc4-m6-pne

Updated Prusa XL - 0.3 Nm Nextruder Torque Wrench, now includes modified geometry to retain the Prusa Torx key:
 https://www.printables.com/model/1259282-prusa-xl-03-nm-nextruder-torque-wrench

here is a video on How to change nextruder main plate on Prusa XL:
 https://youtu.be/mym0PPToUug