You need all of the header buttons enabled, and the contour master as well. We don't mess with the auto reel adjustment or speed.

Buttons 2 and 3 should lower the head and run different height settings and button 1 will be for lifting the head on the ends. To set the different heights and pressures, push the button, and turn the front knob on the arm rest. Your header rate of drop and sensativity can be adjusted under flip up arm pad.

The manual explains it pretty well.