Hello Govert, I recently got a 1979 300cd. The tranny has 2-3 shift flare/slip and 3-4 flare if I press hard on the accelerator. However, when I press the accelerator lightly, I have very smooth shifting. This car has no pressure rod and it only has vcv on top of the ip. It's a 722.118. Does this trans have a vacuum modulator? I already tried disconnecting the vacuum line goingno the trans but it's still the same. I hope you could help me out on this problem.