||First, lay the saddle upside-down on a flat surface with the cantle facing you. Open the flap between the panels and use the t-handled hex wrench to just loosen the two set screws. Take care to simply loosen them. Don't remove the set screws.
||Second, put the double-sided adjustment pen in the holes of the adjustment wheel to turn it. Rotating the wheel towards you will widen the gullet, and rotating the wheel away from you will narrow the gullet. Stop turning when you feel resistance as you have reached maximum adjustment of the tree.
||Third, when you've adjusted the gullet to the desired width, lightly tighten the two set screws with the t-handle hex wrench. Take care to just lightly tighten the set screws as over-tightening the screws may cause damage. Close the velcro flaps and you are ready to ride.