Rear axle alignment

[mister.freeze]

A while ago I ran across a thread about leaf springs not having all the leaves lined up side-to-side. The consensus seemed to be this was not a problem as long as everything was tight and functioned.

Yesterday, I had a front end alignment hoping to correct a mild but definite pull to the right. Caster was ok, no changes made to camber, and a little bit of toe was adjusted, but the pull remained.

So today, i took some measurements to find the right rear tire 7/8" further forward than the left. It's the wheel with the misaligned leaves too. Does this mean the nipple or pin keeping everything lined up is broken? I hope not... if I loosen up the u-bolts, tap the axle aft, and re-tighten, am I good to go? Thanks in advance for any input.