OK, MB DOC called me and said that there is a service bulletin that says the control module was updated to stop de-acceleration fuel shut off at a higer level (1200 instead of 900) and this will solve the problem!!

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Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
LEAD TECHNICIAN FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM