Your on the right track bud. Either way you posted is good fixes to the issue.
1) fixes it...it wont move.
2) Fixes it...and gives you the ability to correctly center your axle...even the ability to recenter it after your springs sag after they get worn in, you you choose to go with a slightly larger or smaller spring later on down the road.
Me...I vote option two.
Also...I will add a little poll to the thread for you.