I believe I would do like edarnold suggested, but I would take it one step further. Along with the factory jacks, I would place jack stands on the frame as close to the axle mounting points as I could, before I let weight off the axle. I keep thinking of all the boat and camping trailer axles I've seen bent by people jacking too far from the mounting points and/or tires. With that in mind, I picture the distance between the fatory jacks, and all that weight maybe bending the frame itself. Maybe not needed, but better safe than sorry.

As always,,,,,, just my opinion.


Mack