Right, more of a stop than a pivot.
But the lever it stops, changes the pivot point of the lever the accelerator hooks to.
The pin is replaced by a moveable stop on a TD pump.
That's what I always thought too......
I don't have an LDA or the pin, even turned all the way in it wasn't that black. The other day I was getting stuck and tried 2nd gear floored, it bogged real bad (I have really good tires
) and when I looked in the side mirror I couldn't see anything but blackness. I had a slight tailwind so it was blowing past me for a couple minutes. During that the egt's where actually dropping.
All that to say it seems easier to overfuel at low rpm than at high revs.