Troverman is correct. No need to pull the inner panel. Not to put you down, but my 6 year old did this last year at age 5 (I showed him one and he did the next one). We were replacing the rubber gaskets. The fronts are a tad tricky, had to turn the lock with the key to get tumbler in position to get it out without force. Be CAREFUL of these little bits and wires in there. The alarm actuators are fragile and VERY expensive and the tumbler will not work without out them (even if the alarm is disabled). I damaged one and had to tie it in place with string.

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David
1986 300E Anthracite + ECodes + MB Mileage Award