Jules, look for signs of suspension leaks while you are diagnosing. Leaking rear could sure induce a wobble. One more thing, are you a "heavier than normal" fella? I weigh 250 and the Eagle Mike raising links helped me a bunch.
RTB V- The Texas ADV Rally- Hurry before we fuck this up!
"If you can't fix it with a hammer you can damn sure teach it a lesson".