focus on the tierods, the ujoint (bell coupling) at the bottom of your steering shaft where it attaches to the steering box, that joint is notorius for slop and can be rebuilt cheap and easy. There is a bearing at the end of you steering column right where the steering shaft comes out of it under your hood, grab the shaft just below the ujoint and try to pull side to side watching for any slop at the bearing. It is a plastic bearing and fail often. Check your shackle bolts that they are not loose. These are known areas for slop steering in cjs. Just seen you have 6" of lift and 35" tires, what type of lift do you have? spring lift only, springs and tall shackles, spring over??? do you have a dropped pitman arm?