My dad bought a new 4x4 '66 IHC Scout 800 (live axle). He drove it 66 2-lane mountain miles round-trip to & from work on Mt. Pisgah. He wrote me a letter (remember them?) about '69-'70 when I was off the coast of VN in the Navy, complaining of front-end wobble. He'd hit a bump at 55-60 mph and the front tires started oscillating uncontrollably; he had to slow way down to get it to stop.
I wrote back and suggested he replace the front shocks and add a steering stabilizer. He did, and the problem disappeared. He was very highly impressed that I could diagnose the issue from 10,000 miles away. I don't think I ever told him that it was a lucky guess.... ;)
Jim, "Mo' coffee!"