This problem would be better directed to the techs in this forum in general. PS Lee is our editor/writer/tester. I am the tech on the site, but there are at least 10 more who look at these posts all of the time!!
MB Doc needs to answer this since he races a 190 5sp. I have only 2 cars of all of the MBs that I service that are 5sp and I haven't ever seen this before.
ASE CERTIFIED MASTER AUTO TECHNICIAN
LEAD TECHNICIAN FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM