[tentcamper]

I would get the trailer level side to side with blocks under the tires, then I would use the tongue jack to level front to back. Put the stab jacks down.

I agree don't try to level with the stab jacks. It's hard work by hand and my cordless drill will not rise the trailer more than an inch. If you want to rise it more after level. Put the tongue down and lower the rear stab jacks as much as you want then rise the tongue until level front to back.