It's been so long since the issue first popped up that I had forgotten that the problem started after switching to my T/A valve body work

It's not the linkage

Maybe the NSS can be screwed in a little farther, but I don't recall it being loose when I was hooking everything up

So the comments re "something" about the rooster comb make sense... what ever the fix is

2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)

1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)