Good luck, I'm sure someone else (ok, anyone really) can help you better than me with diagnosing some wobble, but what I've learned from my issues:
If it's TRUE DW, like you crap your pants & it only stops when you come to a stop wobble, it's most likely gonna be the trackbar. Check the bolts, make sure the holes aren't torn up or ovaled out.
If it's just a little wobble here & there, like mine was, check out this mega DW thread - if you have the patience to go through it, you will find the problem. http://www.wranglerforum.com/f202/diagnosing-death-wobble-and-fixing-non-dw-shimmies-and-wobbles-78034.html
But easy to start with: check your ball joints, mine were completely shot with 20k on it & 35s. Also make sure your tires are balanced, can't do much with an alignment on the JKs except adjust the toe, but it's nice to know the numbers.