[Pat L.]

You should back it in and block the wheels plus I would put a wheel lock between the tires. Then using blocks spaced apart about a foot form a cribbing. On the top tier install additional blocks and then lower the jacks. The shorter the jacks the more stable it will be. [MAKE SURE THE WHEELS ARE LOCKED IN PLACE] Level the unit and you should be good to go. When alternating the blocks use all of the same size materials. You might have to go to the supply house and purchase some extra boards and cut them up. DO NOT skimp on the cribbing as this is the foundation of your castle. Good luck.