I am using an Anderson WD hitch and I set it up using the recommended settings and installation procedure. I do however have wildly fluctuating weights in my camper and the bed of my truck, between fresh and waste water and fuel, over a thousand pounds of weight plus or minus.
I have found that by using the airbags after the trailer is hitched and WD hitch hooked up, I set the bottom of the hitch to the same measurement as the original set up elevation. The weight transfer is good and the trailer tows like a dream.
I have scaled the truck several times, when the tongue weight gets heavy the weight transfer is effected, by unloading the front but I can still get close to unloaded weight on the front wheels. The bags do not effect the weight transfer, but do keep my headlights on the road.,