If a motor happens to be incorrectly plugged-in swap the
required plugs around until the correct set-up is achieved.
In the extremely unlikely chance a motor is travelling in the
opposite direction that it was commanded to travel, a setting
must change in firmware to correct;
If there is an obstruction in the path of an object, clear
whatever could be encroaching and use cable-ties to tidy up any
loom or wiring as necessary.