Towing w/out weight dist -- am I being too conservative?

Overhaul the ProPride hitch and get it up for sale. The bearings and seals will be marked with part numbers you can likely buy at a bearing supply house or look them up in the manual.

I towed my 30ft x 12,500lbs Roughneck trailer on a ProPride. It went straight like on rails. Really nice.

I've also towed it bare nekked on the drawbar on 2 different won tons and my little Kenworth. It's fine.

I wouldn't think you would have a sudden unexplained catastrophic loss of directional control.