Hi, I’m having problems with engaging reverse gear on my 450 sl 1972 when engine is cold. Filter and oil has been changed. When engine running at normal temperature it engage without problems. Read in a buyer’s guide that some bolt situated close to kick-down contact could be loose. Any knowledge whether this could be the reason and where to locate this bolt?
Hope for some assistance.

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450 SL 1972, 300E 1986, B180CDI 2007