I adjusted mine to spec recently. The rod to the fulcrum was the only one that was right length, but when I lenghtened the rods to the throttle body and cruise control actuator(?) the fulcrum closed and so I had to shorten the slide adjustor to the Bowden cable to compensate. Result was the shift timing was later, which felt mor correct and got closer to spec, but shifts became sloppier-especially the 2-3 which now flares a lot. I'm waiting for a pressure guage I ordered last week to check the modulator pressure before I make any other changes.
No expert here, but checking the modulator pressure seems like a logical step. If you sort yours out before I get mine dialed in, I'd appreciate knowing the lengths you end up at.
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)