How to determine and adjust centerline thrust?

6pk2goDemon said
The best way IMO is to get a printout with your alignment specs including the thrust angle. Shimming the rear will move the thrust angle, but will not adjust rear toe.

Ah Ha!
So it is measured off the rims then.
That makes sence.

Thank you

For some reason I was thinking it was measured from the rear axle center to some point on the frame or body.
Duh :D