That’s a very good post here ....ought to be in a manual.Not trying to take away from the OP’s thread but let me break it down for you for a second. Death wobble is due to loose components - primary being the track bar. If you have a buddy shimmy the steering wheel back and forth while in park and engine off you’ll be able to see what components have play. Bumpsteer is due to your dropped pitman arm and the inverted T steering your currently running instead of the OEM Jeep steering of inverted Y. Wandering/tracking/return to center are affect by three things, loose components (death wobble also a symptom), not enough caster, or not enough toe-in. Check the toe by measuring the front of your tires across and the rear of your tires across and comparing the numbers. There’s threads on here for setting toe. Check your caster/pinion angles with an angle finder pressed against the driveshaft and input yoke to the differential. Loose components can be checked by the method I laid out above with your buddy, or by visually inspecting bushing for cracking and/or play. Feel free to PM me if you want some help with your numbers!