Stop in for a cup of coffee

New cable? Might have done that initial strech they do when new. Double check the adjustment again. Prob something simple.
Yep. I’m trying to remember how it works, but inside there is a Detent pin that presses against the rooster comb to keep it from going in gear while park is selected if that cable is off or worst yet, that spring retainer on the end of cable stretched during install, which happens a lot, it may not be fully coming out of park