prossech, it's possible the coat hanger used to make the removal tool is too small a diameter. As I recall I used a piece of 12AWG copper to make the removal tool I used on our 1992 300CE ignition tumbler. It took some extensive fiddling, but the ignition tumbler came out ... some tumblers may have a closer tolerance fit than others. The angle and orientation of the beveled tips are critical. You may want to try some graphite, or WD40 in the holes before inserting the tool.

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Fred Hoelzle