Your Z axis has lead screws. You carefully positioned them parallel to the Z axis guide rails. Why?
Your X axis uses a belt. You didn't position it parallel to the X axis guide rails. Why not?
What are the motor specs? How much current is it set for?
Your X axis uses a belt. You didn't position it parallel to the X axis guide rails. Why not?
What are the motor specs? How much current is it set for?