I'm afraid you'll have to find out exactly what's wrong first. Unless you drive alot on very rough roads, I'll be surprised if there is any looseness in the frontend, but the only way you'll know is to raise it and check it by shaking, prying and pulling. If you're not comfortable with this, you should definitely take it to a good front end person to have it checked.

Good luck,

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Larry Bible
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles