I doubled up the size of the clamps......
They are quite a bit thicker now and heavier
But they should do the job.
Tomorrow Sunday I have some stuff on the "Honey to do" list that I have to get round to, but I hope to get most of my afternoon in working on the hitch, I think I can get it done, as there is not that much to do really, this is a very simple hitch compared to the rack I built before.
Wish me luck!