I keep finding my mixture to be changing after it has been set. I can set it fine via the tower and I can feel the spring inside there return the portion that engages the adjustment screw back to the upper position. But I still find that the mixture does not hold and will wander to a little rich or a little lean about a week after driving. My question is two fold. Does this signify I need a new adjustment tower? Or does this suggest that there is something else wrong in the distributor? My AFM is set perfect as well and I do not think I have any air leaks into the AFM to throttle plate section as when I spray carb cleaner all around it I do not get any fluctuation in engine RPM. What do you guys think?

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~Jamie
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2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....