722.303 trans (yours!) is supposed to start in FIRST gear. There is no valve body "kit" for it. Adjust the trans; Bowden, vacuum, modulator. There's lots of info in the archives.

2nd gear start is only a gasser thing. Our diesels won't get across an intersection before the light changes without first gear start.

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The Golden Rule

1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)