It looks like I have the same problem! I got this CNC set it up and run the program but it is cutting backward (mirror) and it is cutting really really small. I attached some information might be helpful to someone wants to help me. Thanks

The use of high-precision ball screw:diameter 16 mm; pitch 10 mm;

Router is the length of 50 inches, width is 33 inches, 120cm 84cm

Effective processing distance: X = 40 inches,Y = 24 inches, Z = 5 inches (100cm 60CM 12CM)；

NEMA23（Y-Z-A) and NEMA34（X) 3A stepper motor ；Maximum engraving speed of 6 M / min;

30v 3A CNC drive