>>8412618>>8412644If you look at a liftarm it has a smaller opening followed by a slightly larger one right at the lip on either side. Two of them pressed together make a larger opening. That is where the larger bump one third of the way down the pin to sit in. It compresses through the smaller hole but is meant to rest in the bigger one. The pin is perpetually being compressed if the liftarm isn't lined up with the bumps on either end of it.
