First question I would be asking is why they didn't weld it back in the original location. A stock Jeep shouldn't need any modified parts. Also, if you have a shimmy at 50mph that you didn't have before the alignment may be off now. I would make them correct what they did. Just because it's 4-Wheel Parts doesn't mean they did it correctly.
And, FWIW, Don't let them sell you on the "bad steering stabilizer" crap. A bad SS does NOT cause wobbles in the steering. It has been documented and proven many times over.
If the 4WP location won't do right by you, go up the ladder.
Silence is Golden, Duct tape comes in Many Colors.
Journeyman Polyphase Meterman IBEW Local 387
Work with enthusiasm as though you were working for the Lord rather than for man.
Siena Jeep Owner's