[shorod]

Did he use the word "bar" or did you insert that? There may be a pressure valve adjustment or similar fluid path adjustment, but if he said and meant "bar" then I don't know what that might be. I don't guarantee that there is any type of service adjustment on your rack.

You probably could not just "shim" caster in either. I imagine that the front suspension is only adjustable for toe. Most of the economy cars do not have adjustable caster or camber unless you drill out the mounting locations at the strut tower and install an aftermarket kit, but those generally just fix camber issues.

-Rod