CavemanCharlie wrote:
It is tapered and it's into a material that is not rubber but, I don't know what it is made of. The ball is chrome and I've had mine for several years and I don't see any wear on the ball or hitch.
All I know is that it works very well. I have heard that this hitch only works in trailers with light tongue weight. But, on my TT it works well. I love it.
Might work well, but fair chance that the hardness of the ball compared to the hardness of the ball socket are two complete different beasts. I suspect the ball has a very hard surface (most balls are heat treated to harden the surface for wear resistance) and the socket will be typical softer stamped steal.
Ball may look fine, socket on the other hand will wear on the side to side twist motion that happens as you drive down the road. Picture as you drive down the road how your vehicle changes side angles, your trailer lags behind the vehicle a second or two before the trailer gets on the same angle plane. Basically the trailer socket will rock and twist.
As far as the OP's issue, It is possible to have the trailer sitting at an angle severe enough to make the ball hang in the socket. Have done that personally.
My flatbed utility trailer parking spot is downhill and off to the side of my driveway with a very short distance to get my truck in front of the hitch. Sometimes there is enough angle twist and difference in elevation between trailer and truck the ball doesn't easily fall out.
So, options are to step on the truck bumper, adding my weight to drop the truck some. If that doesn't work, sometimes stepping on bumper and a good jump gets it done. If that doesn't work, hop in truck and backup slightly and it falls right out.
Rarely do I have to do that with my TT as I can back straight in, and trailer and truck sit at the same angles side to side.
If OP has the correct ball size, confirmed by manually inserting ball into the socket (without the hitch attached to the vehicle) which it should easily be inserted and removed by hand I would say their issue is not relaxing the pressure on the coupler and ball. That can be caused by sideways pressure from not chocking both sides or not allowing the vehicle to push back slightly.
The reality is it can be a common problem for some folks depending on where and how they park.