I fought 5th wheel "chucking" for several months. Lots of opinions and remedies out there. I tried leveling the trailer, adding pin weight, Bilstein shocks on my truck, etc. Finally I installed a MORryde shock absorbing pinbox and it made a huge difference. I won't own another 5ver without a MORryde or similar shock absorbing pinbox. It doesn't elimate the chucking but dampens and softens the jerking motion enough that I hardly notice it.