HELP *Turbo Action Shifter Cable Adjustment*

I’ll try to keep this short. I recently installed my new engine and untouched 727, rmvb transmission, along with my untouched Cheetah 7001B shifter. All were working flawlessly last year when I removed them. I adjusted the shift cable as described in the manual, but am having an issue I will try to describe.
Once the shift cable is adjusted, I can start the engine while in P and or N, but if I rock the car for or aft while in N, it will not start while in P, but will still start in N. Now when I rock it for or aft while in P until it stops rolling, I hear the transmission “click” if you will, then it will start.
Is it merely an adjustment issue, or something else?
Set the detent position in first. And try again.
Are you using the factory neutral safety switch, or the little one it came with on the actual shifter body? Those little window switches he's are a pita. The factory NSS is actually pretty good...and easy to tie in to.