Just because it is in "spec" doesn't mean it is right.

I did 2 wheel alignments this week that were totally in "the green" yet with some tweeking I corrected them (they both pulled right, W203) while still keeping them in "the green".

Tyre pressures must be even, ride heights correct.

Rear toe is overlooked frequently and can cause the vehicle to "crab"

If you drive on the left of the road then you'll need more negative camber and more postive castor on the left wheel. The opposite applies if you drive on the right.

Even when you correct the alignmet the front tyres may already be worn into the old alignment pattern (worn to suit the camber). If so then swap the front tyres around. Swapping tyres shouldn't be done to initially correct a fault, you need to correct the cause of the tyre wear first.

Please post the alignment figures you have you car adjusted to help find your problem.

__________________
Alex.

MB Tech
Sydney, Australia
Volvo 122S
W201 190D 2.5 manual
W202 C240
W203 C32