Must have read someone else's post.... Anyway, you obviously don't clamp the vise-grips on the threaded portion of the axle... You put in on the fixed axle nuts. The ones you didn't loosen.

"Kentucky windage" is an old shooting term. Our ancestor's "Pennsylvania" and "Kentucky" rifles did not have adjustable sights. So, depending on conditions, one might have to aim not at the target itself, but at a point to one side or the other to compensate for wind.