To use WDH, follow the directions in the article at the CAN AM RV website titled, “How to Set Your Torsion Bars”. This is the rough-in. Use a carpenter level across the door threshold and keep the trailer leveling inside the bubble.
At the Cat Scale, one pass with hitch tensioned as per above, then a second with tension fully slack (plus crossing third time solo).
Get tire pressure nailed down at book value.
Ready to test means an easy 1.5-hours to a pull-off with gentlest braking. Ck pressure. A rise of 5-7% above book value is fine. 9% or higher means add some.
The other tests need doing. You may need more weight transferred, or less. It’s “right” when itvtracks on rails. Level trailer is required. Truck may squat (not a problem).
. (An addition to this is headlight height. Go to auto lighting engineer Daniel Sterns website to learn how to correctly aim headlights. Once WD values are as you like them, you need to know how much to adjust lights for correct pattern).
Unlike the others, never assume. TEST & VERIFY.
An annual 3-pass scale verification is a minimum. There will be A RANGE of adjustments to record and keep handy with those scale tickets. Every rig has this range, and it differers slightly for each one.
Take your time. Buy the tools and keep them dedicated to this use. Do the record keeping and testing. It’s only over a hump the first time.
Good luck
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