I am a little confused by what the gear ratio for my 2012 JKU Sahara is. The build sheet and window sticker both say 3.21, but in the 2012 owners manual for Trailer Tow Weights i can't find my specific model. I have the trailer tow group also in my build sheet not max tow. Let me know your thoughts. Screen shots from owners manual attached. Where is my 3.21 JKU Automatic Sahara on these charts?