I have rebuilt the front suspension on my '77- bushings, tie rod ends, ball joints ,shocks etc. When I took it for an alignment at the Porsche dealership the tech, who did the alignment -(and who also happens to be my son
) said he couldn't dial in quite enough castor angle. The car tracks and handles well except it tends to wander a little if you don't pay attention, but it used to be rock steady in a straight line. He is experienced working on the newer cars but mine is "older than he is". We are out of ideas, is there something that might need special attention, say with a large hammer, to reach the castor angle spec.?