So, the saga continues but we're getting somewhere. I got the car back after replacing the transfer case. The shudder and jerking is gone.
However I still have a vibration under load, typically going up hill, around 40 - 50 mph. It's very noticeable.
Also, when I'm approaching a stop I get a heavy vibration / groan through the car until I'm completely at rest.
I've read places that people have experienced this sort of thing due to a failed front axel. So I put my car on the jack and checked the axels for play. The passenger side is the original axel, @265k currently. There is a slight amount of play in it where it meets the large metal drum near the engine.
Does this look like too much play? Does anyone have experience with this?
https://www.dropbox.com/s/2onge85czd..._8505.mp4?dl=0