Linkage Adjustment for Neutral Safety Switch?

Not without knowing your specific linkage configuration, but they are usually at a pivot point in the linkage.
A bolt through a small block that keeps a rod from moving, or some other device related.

These pics show a couple of types.
Even though one is a kickdown rod the adjuster type still can apply to shift linkages.

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Thank you very much. As my mother often told me, "you're a hands on learner"