Avoiding Z-Axis Desynchronization

One of the problems with the Tronxy printer is that the Z axis is driven by two independent stepper motors.  That means that if only one moves, the calibration of the Z axis is hosed, and it's back to synchronizing the Z axis and releveling the bed.  I'm getting faster, but it's still a pain in the neck.

The most common reason for losing synchronization in my experience is that the right-side motor shifts while I am messing with the filament (changing filament, adjusting the extruder, etc.).

The rule I have developed to avoid problems is this:

ALWAYS HAVE THE STEPPER MOTORS ENABLED WHEN TOUCHING THE EXTRUDER

With the steppers enabled, I have never had the Z-axis motor spin while adjusting the extruder.