I rotated the rear diff on my 01 tj w/4inch lift to get the angles right, took it for a test drive and noticed afterwards that the rear pumpkin was pretty hot to touch. I just can't remember if that's normal, I'm praying it's not overheating cuz the pinion gear may not be getting enough splash from the angle I rotated it? Or is it safe to get hot to the touch? Its not unbearablely hot, but pretty darn warm.
Troy