I am with Delta Bravo, perhaps us Spokane guys think alike.:)
Look, it is pretty simple. Back your trailer into place, place wood 2 bys to level it from side to side. Chock the wheels. Unhitch from your tow vehicle by using the tongue jack. Drive the tow vehicle away. Use the tongue jack to level the trailer from front to back. Put down your stabilizers and you are set. Everything is level, nothing is at risk of breaking. You can put some blocks of wood under the tongue jack if you need additional height to get it level. Use wood blocks. If yours cracked, get some new ones. Leave the cement blocks at home, unless you like tossing them around for exercise.
