I am not confused at all. If you have a preference as to the cause of chucking, you can get verification from one of the many post. I also have concluded that based on these post alone, anything and everything or a combination of things may or may not cause chucking. I have even read that anything you do to stop the chucking is just masking the problem, not fixing it. This one has me scratching my head.
As I to my little 5th wheel down the highway and see movement in my mirrors, I will have a tough time determining if my 5th wheel is proposing, chucking, or just hitting bumps in the road.
I am not confused, but I reary don't think I know any more now that I did before I read this thread.
Wayne