Never had to do roll back disengagement since good old FJ45 days.
In GU auto mode, slap mine from 2 - 4 wd on the move heaps and never had disengagement issues. First, always at idle, before driving off (auto mode) I just engage/disengage from 2H to 4H a few times and then I have now engagement issues or clicking noises. Without doing this I have engagement issues (won't engage and click away). Have also been running LS90 in front diff for past 5yrs. Next will use 80w90 mineral.