You want to put that jack stands under rear end Axel tubs... Jack it up from there, not on the frame of the car. This simulates car being on the ground. The front of the car can be on Jack stands.
If you have Jack stands on the rear frame, just take your Jack and place it under the rear and Jack it up until it just starts to come off the stands.
The things they hide, the way they spin things, the excuses that they make and the things they omit.