HELP *Turbo Action Shifter Cable Adjustment*

Ricks70Duster340 said

The issue with slack is the culprit here. The shift lever is held in each position by the rooster comb/checkball that sits in the detent. I've not had one with any slack in it. If the shift lever is not loose on the shaft, then there is something awry with the valve body that would cause looseness.

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Winner, and no more "Guessing" required, because thats the problem.
OP's observed issue is the NSS isn't function properly. REAL issue is too much slop on the rooster comb. should have damn near zero play in every detent position. i have found park has some "dead / overextension" area that can make shifter cable adjustment a bit tricky, but thats why you set cable slack in gear, vs park.