Are you pushing the gas down about 1/3 on start up? If not try it....and never shut it off hot unless it will have a chance to cool down pretty much completely.

I chased the exact same problem on mine for months and all I accomplished was spend a lot of money.

After doing the above on the advice of an old Mb mechanic, I was able to adapt to the quirks of the car and lived happily ever after.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.