I can't tell the size of the pins by the picture but I can tell the lower arms need to be turned around so that the turnbuckles are on the outside. You need buy spacers to use on the pins on the tractor. They'll look like a short piece of pipe and would go between the ball on the arm and the tab for the turnbuckle.
100% correct, those arms are all messed up on wrong. Flip the arms over, put on, put a spacer(pipe) on, then the end of the turnbuckle to the outside.
You'll mess something up this way, and it will cost to fix.
--->Paul
What model tractor is this?
Did we confirm its cat 0?