Hi micro,
I had the same problem with my 89 300se a few weeks ago. From a dead stop I'd put my foot in it ( a little) and the car would hes..i..tate andthengo. I enriched the co mixture a little, maybe an 1/8 of a turn. Checked for vacuum leaks as well, some of the hoses were cracked and replaced those. One other thing I found as I was greasing the throttle linkage was that I wasn't getting full throttle. There's a ball joint that fits right into the firewall on the linkage, it had popped out so I replaced that. Now I have great power and acceleration. Hope this helps!

How's the mileage on your car? I'm getting around 14-15 mpg and I'd like to think I could get better.