Makeblock Ultimate 2.0 - LaserBot Image Size Discrepancy on Axes

90
Why does the LaserBot cut or engrave the image in different
size on X axis (or Y axis)
If the LaserBot cuts or engraves the image in different size on X axis (or Y axis) as the picture
shown below (the image's Y axis is stretched), here are troubleshooting you could try.
1. Update firmware.
2. Swap the two motor drivers’ position on Mega Pi and check if the image’s X axis is stretched
(like the second picture below).