Not at the desk to double check Morty, but it should be pan and tilt at sine, with tilt having a rate exactly twice as fast as pan. Pan and tilt offset are the same. Position for the effect should be as close to the pan zero and tilt + or - 90 for a clean figure 8. If the light crosses the 0/0 position it's gonna screw up the effect.
Not at the desk to double check Morty, but it should be pan and tilt at sine, with tilt having a rate exactly twice as fast as pan. Pan and tilt offset are the same. Position for the effect should be as close to the pan zero and tilt + or - 90 for a clean figure 8. If the light crosses the 0/0 position it's gonna screw up the effect.