I don't think that's what Deano meant. I think he meant not to put the ends of the rod too long so they push on the bolts outward. And I would never use an impact wrench to tighten, much too musch chance to over tighten things.
Firefly: Mal: You don't know me, son, so let me put this to you plainly: If I ever kill you, you'll be awake. You'll be facing me. And you'll be armed.