Get some scissor jacks. I had 26dbh, had same issue, put scissor jacks around in strategic locations, pretty much solved the problem. The jacks that come with it won't stabilize it. Do NOT crank them down too much, they are not made to lift the trailer weight.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS