Got the new hitch back...the crossbar has been replaced with a 2.5" square tube!
Unfortunately, the measurements were off so I had to use a big sledgehammer to "adjust" one of the ears. Hooked up the trailer and took the rig out fer a quick run. Pinned the trailer in the middle of the five available adjustment holes. Seemed to work just fine with just a little bit of bucking. Nothing else was in the trailer so I'll have to try it again with about 100lbs strapped down above the swivel point. Didn't install any of the gap covers fer this run.
Been thinking about adding some Foamular to the doors to bring them out to meet the gap covers. I've been thinking about cutting back the doors since I have the clear gap covers...maybe about 5" or so? We'll see.
I'm thinking some more about using a single shock absorber (gas filled) and adapting it between the trailer and the hitch. It might be easier to hook up than a torsion/rotational shock absorber. It should be cheaper, too!