I bought an Andersen hitch with our K-Z 251RK trailer but have not picked it up yet. I can see changes I might want to make to the trailer brackets but apart from that, I'm adopting a "wait and see" stance. One thing, people say no grease is necessary but if one is spending much time on rough or uneven roads, I think it would be beneficial to grease the ball. There is some movement (up and down and a swivelling movement) and where there is movement, there is wear. We tow with a 3500 Ram so weight distribution is not a huge issue. GD