Been a lot of chatter over the last few days about towbars and A frame height adjustments
All I did with my Navara was order a Witter Flange towbar and the adjustable height option.
This is the standard Dixon Bate type things with big pins giving you infinite height adjustments by flipping it round......
.......but it proved too noisy especially with empty or lightly loaded trailers - so I don't use it
Instead I have found that both my Ifor and Indespension trailers sit just right with my ball on the top two holes of the flange.
Just saying