You need to get the front of the car off the ground onto jackstands so that the wheels are free. Then, grab the wheels and try to shake them back and forth. If there is any movement or any noises, track them. They will probably move some at the steering box which is natural to an extent, but a rebuilt box is around $600 I think, so live with it (unless you have deep pockets of course). See if the idler arm moves up and down at all. See that the tie-rods don't have any play. Did they mention anything after the alignment about front-end parts that might be worn out? Also, look into front and rear subframe bushings. I heard whunter had a similar problem with his 300SD and it was solves by rear subframe bushings. You really need to just have a look underneath the car and see what bushings/joints are worn out.

Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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