Some pics and more comments for reference.
It’s critical that the two jack units are parallel, so turn them around and go left for right per the manual (doesn’t matter so long as the lock bars are on the outside) so you can put one short jacking block under the front jackpoint, then at the back, take two of the thick blocks on each side, stand them on end one at the rear jack point, the other just behind and slightly inward (see attached pic, be careful not to catch the flange on the inner edge of the frame as it turns in towards the motor mount). That will allow the car to lift level, and with the second rear block aft of the jack point, I didn’t have any tipping issues. Safety jackstands can be put under the front end of the QJ and under the rear frame rails as far aft as possible.
