first i put on the servo horn. i make sure it moves w/o hitting anything. i set my dual rate for 100%. i center my servo / steering linkages. then turn the wheels left, and set my expo to where the knuckle is just at full lock, but w/o the servo buzzing. i do the same for the right. then i adjust my dual rate for the certain track conditions. i always have equal throw left and right.
-Zac