300SD - 722.3 Automatic Shift Quality

Hello All,

I'm looking for feedback on what one can expect as to the shift quality in a 300SD with a 722.303 automatic.

My car is a 1981 version with 120,000 km (75,000 mi). I know it sounds low but they are legit based on the service history and the general condition of the vehicle. My assumption is that the general condition of the gearbox is good but having been driven so little some deterioration will have taken place. So I decided to be proactive.

I have replaced the following in my gearbox;
1. B1 Servo
2. B1 Valve
3. K1 Valve
4. B2 Servo
5. Kick Down Solenoid (new style)
6. Vacuum Modulator (new style)
7. Filter and fluid.

All are MB components. In addition I have adjusted the modulator pressure as we as the vacuum to the modulator - all to the latest MB specs.

I still find the changes under normal acceleration from 1-2 and 2-3 too noticeable. The 3-4 shift is barely noticeable. I was expecting barely noticeable shifts for all changes but maybe I am expecting too much.

As a last resort I'm considering one of those after market shift kits;

Transmission Part by Bulk Part Valve body kits Shift correction package, 722.3 / 722.4 Diesel

Anyone tried one of these kits?

Any thoughts / feedback?

Thank you and take care,
PK