Maybe you need more beads?
At least I haven't been living with vibes like you for nearly as long!
The recommended amount of beads/tire on multiple sites for 31x10.5 is 6oz. That's what I did and the results I got suck. I saved the weights, so I'll re-adhere them later today and see how it drives then. Anything will be better. Had to drive to town 10 miles at 40mph. At least it wasn't 50 miles!
I'm also going to continue diagnosing the DW. I really don't have the money to spend, but I'm thinking of doing the ZJ Tie Rod and drag link conversion with a new steering dampener (mines leaking and not working). I realize it's not the steering dampener, just needs to be replaced. If that doesn't solve the DW I'll look at suspension related parts.