Join Date: May 2006
Location: Gaithersburg, MD
Car Year: 2009
Car Model: Outback XT-B
He means camber, for sure.
Castor is actually supposed to be different side-to-side. It has a little to do with the amount of weight the vehicle is typically going to carry, and a lot to do with the crown of your average 2-lane US road.
Funny thing, with the wheels dead straight, castor won't effect steering wheel pull at all. Castor really only plays a role in dynamic camber gain, and the tendency to return to straight.
Un-even camber, however, will contribute to steering wheel pull.
09 SWP Outback 2.5XT 5MT 263whp, 337 lb-ft