I have rod linkage with things very straight and lubed.
With engine off it will return to 0 every time even if I bring it back super slow.
With engine running it will go to 0 if it snaps back, but if brought back slowly it will remain at 3 to 8 percent TPS. I am positive the problem is sniper now. Tech is calling me supposedly today.
This is the last piece of the puzzle with it.