You are essentially setting the throttle end points on that page 12. This is actually good stuff since I always have skipped this step if I were using the Brian/iKON on a electric model. They give you some suggested values for Castle on the left. Sort of like adjusting ESC end points, you first back off the min setting, then bump it up until the motor begins to spin, then back off 2-3 clicks. Then raise the throttle to full and increase the max until the RPM stops climbing. Of course, this is done without any blades on. Since I don't fly any 3D, I would never notice any difference, but I think I will start doing this anyway. We have both learned something. Cheers!