George2615
Super Member
This may seem like a dumb question but is it possible the OP may be using a 2" ball and the trailer requires a 2 5/16". That would cause bumping / jerking. It happened to me once. I have several trailers using 1 7/8", 2", and 2 5/16". With a tri ball hitch it's easy to forget to switch to the right ball.