|Thanks chaps for the advice and I tried but with little success this time anyway.|
Somewhere along the way the Nvidia card has taken control of some of the menu choices in the LG menu system.
I can control brightness, Set refresh frequency but..., and this is the menu item I wanted to fiddle with,....
the horizontal width and the vertical width control is selectable as a menu item but they are not alterable.
The LG monitor menu item shows two screen position bars with scales and the present settings are:-
We need some gen on the way the Nvidia is interacting with the LG monitor menu system and where to tweak.
I've got my thinking cap on...