Creality Ender-3 Z-Axis Alignment Correction

During my recent assembly of the Creality Ender-3 kit, I encountered the same z-axis misalignment problems noted by others.

Placing a shim or spacer behind the z-axis stepper motor will not correctly align the stepper motor and the leadscrew because the z-axis carriage bracket, holding the extruder and leadscrew nut, was improperly bent at the factory.

Any misalignment between the leadscrew and z-axis stepper motor will place an unacceptable load on the stepper motor.

Correcting the bend in the carriage bracket corrects the problem.

*** Tips are gladly accepted and much appreciated. ***

The stl file is for a 0.3mm thick paper shim as shown being used.

https://youtu.be/xnzNd_FIMKY