There are serveral people with 7 speed trannies that have complaints on the MBCA board so you are not alone...go back and demand it be made right. In some cases they have had to replace them. The fact is these should be smooth and don't let them try and tell you "they all do it".

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz