No need to search for it. Just move the final gear all the way to the right and then the top speed all the way down. Move the 1st gear all the way to the left and the last 2 gears all the way to the right (i.e.- 5-speed would be 4th and 5th and a 6-speed would be 5th and 6th). Adjust the final gear for a great launch with minimal tire spin in first gear. With the Caterham having 6 gears, continue to adjust 2nd, 3rd and 4th gear until you get a very smooth even shifting transmission. I've had mine up to 180 m.p.h.