my solid axle 2wd C&C wobbled once convincing me to ditch the crap shocks it had on it and it hasn't done it since, i deal with a death wobble on bmws all of the time in my job and several things can do it but it is different on every suspension design, the problem is finding the one or two things that pushed it over the edge, i like the sound of more caster to help keep things inline with a solid axle