As you slow down the trans also changes gears, sounds like you have a problem with B1 engagement & then dis-engaging. MB offers an "auto-adjusting" B1 piston that usually helps with that problem. You can retro-fit that part to your transmission.

You will need (1) 124-270-12-32, 140-277-08-40, & 005-997-86-48. ALL 3 parts have a total list price of $65.

Installing that takes about 2-3 hrs, w/o removing the trans.

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