Z-Axis Printer Calibration Tool

I own a Tronxy X5S 3D printer. This printer is a CORE X-Y design that features two Z-axis motors to drive a pair of acme screws on the right and left sides of the print bed. Once calibrated and running, this system works quite well and does a good job.

However, it seems that each time the printer is turned on and off, the two Z-motors begin to loose their alignment to one another. Over time, this causes the bed to to take on a non-perpendicular, horizontal tilt with respect the X motion p