Steven, I never installed the parts designed to soften the 1-2 shift since I can do that with vacuum if the other shifts are OK. The rest of the parts are used to determine the level of firmness you want, ie; three different springs for the 3-4 shift. I put in all max firmness and it worked well.

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1984 300Sd 210k

Former cars:
1984 300D 445k (!!) (Strider) Original (and not rebuilt) engine and transmission. Currently running on V80 ( 80% vegetable oil, 20% petroleum products). Actually not, taking a WVO break.
1993 300d 2.5 275k. Current 120/day commuter
1981 300SD 188k (Hans) Killed by a deer