Back in October you responded to one of my threads titled "Transfer Case Oil Change $$$$$" where I discussed the expense of having a TSB procedure done to eliminate shuddering during low speed turns. You mentioned you had the TSB procedure done where they replaced your transfer case fluid 3 times and drove it 1 mile in between. You said the procedure worked in eliminating the shudder. My question for you is how long ago has it been since you had this procedure done and has the shudder returned?
I ask because I brought my LS460 into a Lexus dealer (who I trust) and they said they could do the TSB procedure for me but that it wasn't a permanent fix and the shudder would likely return in a year or so. I wanted to confirm that with someone who has had it done (hopefully it's been more than a year since you had it done so I can know for sure).