Kyle,

Two things come to mind.  If you have the Trail-Air Tri-Glide with the adjusting plate at the bottom, make sure that all 9 grease zerks have been greased.  There will be three on each side of the pin box and then three that have to be reached from the rear of the pin box and those three are up inside the pin box in the middle of each "rod".  Those need to be greased every 1000 miles of towing.

I don't know if the pressure in the pin box bladder is so important.  In my case, I always air our pin box bladder up quite a bit before hooking up to the coach.  Then, once I'm hooked up and the rig is level, I use a step ladder to get into the bed of the truck and let air out of the pin box bladder until the bottom of the top part of the shock absorber is down to the top of the arrows.

Also, if you have the Trail-Air suspension on the axles, make sure those are aired up to the proper amount.

We pulled our 38TKSB3 from Oklahoma City to Grove, OK last month and the only place we had bucking or chucking was on a stretch of elevated roadway on the Creek Turnpike on the South side of Tulsa.  Oklahoma has some strange engineers for the design of some of our roads.

Terry

Terry, thanks for the ideas. My pinbox is greased and the airbags on it and the c/p suspension are at their proper levels. Something else is going on to cause the problem.

PD, we have a Curt 24k on right now and would love to get the TrailerSaver...but, man, $3k for that is steep. Nevertheless, if I knew for certain it would eliminate the rodeo ride, I would do it. EDIT: I just took a look at this again and it is only rated to 20k. I need at least 24k.

I am wondering if the problem lies in the truck, not the hitch or pinbox. I wonder if adding some helper airbags to my trucks suspension will do the trick.