I'm new here. But here's what I'll say: the brace where trackbar attached to the front axle has a hole for an inch bolt. And the fact that the metric bolt is used there leads to the fact that the hole will break and turn into an oval. That all leads to a shimmy.
My opinion is: You can tighten and tighten the bolt from time to time. Or you can just change it to the correct one.
In America, tightening bolts from time to time is called "maintenance". But, pay no attention to a silly thing like that. Being that the right size bolt is all that's needed, just install your bolt with a stover or pinch nut but make sure to NOT tighten it to torque spec. :yup: