They aren't that hard to align compared to other cars, something is either wrong with the alignment tech or the parts you installed. It sounds like it's driving like mine did after I installed tie rods and totally ****ed the alignment up. Any little dip in the road and the car would want to move into another lane. After I took it to a standard alignment shop and got a 50 dollar alignment, all was well again.

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1985 CA 300D Turbo , 213K mi