Yet another gooseneck/fifth wheel adapter thread

As you can see, answers galore, none of them having a failure. Physics will show, the force on the pin box will increase. Just like most ball mount hitch extenders reduce the capacity of the hitch by as much as 50%. On all the goose neck trailers i've ever seen, the overhang has a substantial "Gusset" between the vertical trailer frame and horizontal deck over frame.