I asked the question on another board but didn't mention the grease looked like never-seiz. A man named Dennis from Moparts said "they originally used a heavy grease that was somewhat akin to military spec gear grease. Very thick, and appears to have some molybdenum particles in it. Almost like mixing bearing grease, and neversieze"
Sounds like thats it. I'm a little confused cause the service manual says cover the worm gear with gear oil, but I'm gonna try running it as is. Steering feels fine.
Tom