If the lumbar distraction frame can move side-to-side then the roller brackets should be adjusted to reduce the amount of movement.
The distraction frame is properly aligned with the main frame when the two shoulder bolts are aligned in the center of the two holes in the frame.
The photos below show the location of the two bolts. They can be accessed by removing the four bolts that secure the leg cushion to the frame and lifting the leg cushion off.
The finger is pointing to the location that the bolt is passing through the plate.
