Great discussion, and I'm actually glad that you guys do the reading, I thought I was along with that

I got a 190E with similar problem, under load the car misses, and hesitates terribly, but not always, when warming up it does not do that, and then once warmed up it seems to work better, but never perfectly, the hesitation is very noticable when the cold start valve stops richening the mixture, I think that's how it goes. I ended up replacing spark plugs and wires, now I'm moving onto the cap and rotor arm, if that fails, I'm going to start fixing my exhaust cause it's terrible, but the kat is in good shape, just the middle muffler, and eventually a new fuel pump as well.

XP