[embed]https://www.youtube.com/watch?v=ftq1_O9gfMQ[/embed] WIS Robotics explores a common problem with aligning the VEX IQ wheels. In some instances, even when you program the robot to drive straight it pulls to the left or right. Usually, this is caused by the wheels rubbing against the chassis. Some possible solutions to this problem include: Slightly offsetting the wheels on the wheel hub. Inserting a 1/2 pitch spacer between the wheel hub and chassis. Inserting a 2x2 plate between the wheel hub and the chassis. Watch the video to see which method we prefer and why.