Screen does not show motor movement properly

If the movements on the screen do not match the movements of the motors, your motor or motors may be misaligned. First, check whether it is the x, y, or both directions that are not appearing on the screen properly, or not appearing at all. Check the sensor wheels of the affected motors. Are they tight and running along the rails properly? If a sensor wheel wobbles, you can tighten it with the small set screw at the base. Clean the wheels and rails thoroughly. If the wheel is not rolling on the track, you may need to realign your motors. First, check that your rails are level and tight. If they are, follow the instructions here for motor alignment: http://www.intelliquilter.com/procedures/MOTOR%20ALIGNMENT.pdf