What Joel said MidWestGirl...Oh and it occurred to me you might not know about the leveling process or leveling blocks - these make it easy to adjust the side-to-side leveling (do this FIRST on a 5th wheel):
Amazon.com: Camco 44505 RV Leveling Blocks - 10 pack: Automotive
1. BEFORE UNHOOKING and Using a 2-3 foot level
a. (Stanley 42-324 24-Inch I-Beam 180 Level - Amazon.com
2. Place the level under the front edge of your 5th wheel riser (the area close to your hitch)
3. The bubble level will let you know which side needs to be raised and how severe the slop is (some RV-specialty levels will report the slope in inches needed to level the unit)
4. Put the leveling blocks in front of the wheels on the side you need to raise 2 in front of the leading wheel and 1 in between the wheels.
5. Pull forward @ 1 foot
6. Add a block in between the wheels so the leveling blocks support both wheels.
7. CHOCK YOUR WHEELS
a. We use BAL X-Chocks (these have the added benefit of lessening gthe front to rear sway in the 5th wheel
b. Amazon.com: BAL 28012 X-Chock Tire Locking Chock: Automotive
8. Once chocked, drop your front stabilizer jacks and unhook.
a. Some folks (myself included) carry a 2 foot length of 4x4 to put under the jack feet
9. Using the level on the edge of your riser closest to your front electric jack switch, determine front to rear level (raise or lower your jacks to achieve a level bubble)
10. Lower your rear stabilizers until they make firm contact with the pad remember they are not jacks. They are just there to minimize the side to side sway in the 5th wheel.
a. You can use those 2 foot chunks of 4x4 here as well
We also use the BAL Kingpin Tripod which SIGNIFICANTLY lessens sway inside the 5th wheel:
BAL 25037 King Pin Gooseneck Tripod Stabilizing Jack : Amazon.com : Automotive
(Disclaimer: I do not work for Amazon I just use them a lot because they are cheaper than Camping World even as a Good Sam life member! Plus I am a Prime member and 2 day shipping is free