Unloading camper with bent jack?

Thanks for all the good tips. I'll try them when I get home in a couple of weeks. I do have an old jack that failed and I repaired, but didn't trust it for long term use.

To answer some questions:
1) Haven't tried jack yet, as the frame mounted tiedown got bent out so it interferes with moving the jack.
2) Unfortunately, I hit a car. I won't go into the details. :) Good eyes by those that saw the truck damage.

Thanks,