Hi Benzmac,
I have the same problem, however I do not know what you mean when you say "tick mark". Do you mean scribe, scratch???
This is great, maybe I will learn how to fix MB tripmeters afterall. I have two sets of IP's and am willing to experiment.
Thanks

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Regards

Mino Erhan Dallas, TX
'86 300E
'67 Peugeot 404 Conv.
'85 Peugeot 505 STI
'99 Suzuki GSF 600 Bandit