Can't understand why- - - -that would tilt the kingpins forward, and reduce the caster angle or make it "negative"- - -top ahead of the bottom of the kingpin. Maybe there's some positive caster built into the axle? Could one of the service manual gurus confirm that?
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!