Some say having a stiff WD and SC hitch assembly is bad for the trailer.
Some say having stiff Leaf Springs on the Tow Vehicle are not good for the trailer in tow and tough on the WD and SC hitch assembly.
Some say a Stiff WD and SC Hitch, combined with Stiff Leaf Springs on a 3/4 and 1 ton tow vehicles are a bad combination. For trailer, tow vehicle and passenger buttocks in a stiff tow vehicle.
The "Cinderella Complex" or "Goldilocks and the Three Bear Complex".
Some say Not having a stiff WD and SC Hitch attached to the Ball on a 3/4 and 1 ton tow vehicle is dangerous and likely to send the trailer and tow vehicle into a ditch.
I say you do not need a WD or SC Hitch with a 3/4 or 1 ton tow vehicle.
My 2019 Oliver Elite II has Leaf Springs on each axle of the Double Axle System (four sets of Leaf Springs). Towed with a F350 4x4 Diesel. I have heard that the bolts attaching each end of a Leaf Spring and the Bolt Can Fail securing he Leaf Springs. I have been spraying WD40 and Oil onto each bolt. The other option would be to remove the bolt, grease and reinsert with a new bolt, or reuse a worn bolt. I am not sure how the Leaf Spring would react with a bolt being pulled out when the tire is removed and off the ground.
We all have to learn by trial and error. Error in fixing what does not need to be. Or Error in caution that something could go wrong. Or use Murphy's Law: "Anything that can go wrong will go wrong and at the worst possible time".
Some learn more by Error by Trial. Works for me.
Neanderthal's Law: I have to side with Murphy. He is a friend of mine. I have learned from Murphy. Give me some time and I will have a better idea of what should have been done, but not at the time I needed to know better.
Or reconsider what was done and did not need any attention, by those making claims that because it was done, it was not necessary, anwyways.