I will have to climb under there and look at the U joints. I wouldn't be surprised if it's a balance issue either, I need to pull the front and rear drive shafts one at a time and see if either one makes a difference. I appreciate the input!
I honestly haven't taken the time to trouble shoot this much. Eventually I will take the time to dive into this more but I've gotten used to it and avoid the problematic speed range. If I accelerate through it I don't have any issues. Sustained speed in this range is what gets it.
I live about a mile form Old Military! It certainly is a beautiful place. I was born and raised in the Rogue valley. We have a pretty good jeep presence here but we can always use more TJ/LJs!